Richard H. Jahns papers SC0306

Course materials on charts and mapping, topics

Course materials – handouts, etc., topics

Course materials – handouts, topics

Course materials

Course materials, student papers

Course materials – articles

Course materials

Course materials/personal papers

Course materials (Penn State)/miscellaneous

Files by University/College name

Class Grade Books [restricted]

Southern California Pegmatites and miscellaneous other background studies

Seismic Safety Commission; General Earthquake materials

California Mining Board

Weather, climate, ground

Miscellaneous files – reports, studies, correspondence

Old Engineering Geology reports

New England materials

Pegmatite materials

Miscellaneous photographs – topically organized

State Mining Board and miscellaneous teaching materials

Seismic Safety Commission

Seismic Safety Commission / World Petroleum Congress

World Petroleum Congress

Seismic Safety Commission, 1979-82

Seismic Safety Commission, 1983

Geological Society of America Chron, 1969-72

Geological Society of America Chron, 1972 - , subjects

General Correspondence Alpha A-K

General Correspondence Alpha L-Z

Recommendations [restricted]

California Academy of Sciences / California Division of Mines and Geology, U. S. Geological Survey

California Academy of Sciences / California Division of Mines and Geology

Societies

Societies

Correspondence Subjects

Correspondence Subjects

Correspondence Subjects

Correspondence Subjects

Correspondence Subjects, Chron files

Chron files miscellaneous

Rainfall Graphs undated

Two field notebooks, 1937, concerning the granite district of Milford, New Hampshire; and 1 reprint

SOUTH WEST OF GILA NATIONAL FORREST - NEW MEXICO - PART 1 : Hand made and printed topographic maps : Map of New Mexico (342), Map of New Mexico (366) c.1950

SOUTH WEST OF GILA NATIONAL FORREST - NEW MEXICO - PART 2: Hand made and printed topographic maps

FIVE TOPOGRAPHIC MAPS OF GILA NATIONAL FORREST: Wilford Ridge, Brushy Mountain, Palomas District Sierra County New Mexico 1952

APACHE MINING DISTRICT - HIDALGO COUNTY - NEW MEXICO: Apache Mining District - Bold Eagle No. 2 - Section 12 #19J, Warm Springs Apache Indian Reservation Sec 4, 1-inch section paper with drawing, Black Range Mining District No. 2 M.D. #2

ABSTRACT: " Studies in the System MgO-SiO2-CO2-H2O (II): The Activity-Product Constant of Magnesite by C.L. Christ and P.B. Hostetler c.1960

MAP TITLED: "NANA MINE, NEW MEXICO 1953

MAP TITLED: "ANTELOPE MINE AREA, HERMOSA DISTRICT, NEW MEXICO 1952

HERMOSA (PALOMAS) DISTRICT - NEW MEXICO - PART 1: Map (1955), Details of Minerals in the area, Journal Clippings (1969, 1970, 1977), Notes, Hand drawn maps 1955-1977

HERMOSA (PALOMAS) DISTRICT - NEW MEXICO - PART 2: Topographic map of Switchback area - West Spur - Iron Mountain (1980), Hand drawn map of Iron Mountain District - Sierra County (1951), Geologic map of Iron Mountain district - Sierra and Socorro Counties (1944), More Iron Mountain maps (topographical) 1944-1980

HERMOSA (PALOMAS) DISTRICT - NEW MEXICO - PART 3: Geologic map of Hermosa (1953), Geologic map of Pelican area - Palomas (1955), Geologic map and the Lake Valley Quadrangle - New Mexico (1952), Simplified Geologic map of the Palomas Camp Area (1953) 1952-1955

HERMOSA (PALOMAS) DISTRICT - NEW MEXICO - PART 4: Several hand drawn maps of Dictator Mine - Sierra Cuchillo (1977), Photo copies of New Mexico maps (1883, 1935), Photos of the area, Map of Counties of New Mexico, Topographic sketches of Iron Mountain Tunnel - Haile Mines Inc.- Sierra County (1951) 1883,1935, 1951, 1977

HERMOSA (PALOMAS) DISTRICT - NEW MEXICO - PART 5: Brown Envelope Titled: "Hermosa, Maps, etc." - contents are: Photos of the topographic map of Winze Nana Mine (1958), Eagle Camp Paloma District (1952), Antelope Mine Hermosa (1952) 1952-1958

HERMOSA (PALOMAS) DISTRICT - NEW MEXICO - PART 6: Fusselman Formation Diagram, Photos of the area, Map of the area in Sierra County New Mexico

HERMOSA (PALOMAS) DISTRICT - NEW MEXICO - PART 7: A letter size envelop titled: "Map Fragments, etc. Sierra Cuchillo New Mexico

HERMOSA- SIERRA COUNTY - NEW MEXICO - PART 1: Letters & Clips (1962 ~ 1981) 1962-1981

HERMOSA- SIERRA COUNTY - NEW MEXICO - PART 2: Core Description (1) from 6/8/80 ~ 9/27/80 1980

HERMOSA- SIERRA COUNTY - NEW MEXICO - PART 3: Core Description (2) from 9/28/80 ~12/20/80 1980

Mimbres District Trails booklet

Maps, notes, and tables regarding the geology of Harding Mine, Taos county, New Mexico c.1950

Moon: A chart of showing the craters blasted. Dated 10-20-70 1970

Moon: B/W photo of a section of the crater depicting the traverse course, age, and etc. A sheet of explanation page attached

Moon: B/W photo of a section. V v-26.1 M-10G EK 118 m

Moon: (color poster) USAF LUNAR REFERENCE MOSAIC LEM-1A Lunar Earthside Hemesphere (published by the Aeronautical Chart & Information Center, Nov 1962) dated July 1967 1967

Moon: Color photo print of Geologic Map of the Near Side of the Moon. A photo print of explanation layout. A letter attached regarding the project. Dated 8/24/1970 1970

Moon: Three photos of Paleoselenographic Reconstructions (The Present; Just after Most Mare Deposition; Before Most Mare Deposition.) A letter regarding the project attached. Dated 8/21/1970. 1970

Moon: Hand-written 5 page notes

Moon: Generalized Log and Explanation Black Cayon Crater Field; FRA Mauro Landing Site Geology Map Explanation; A Traverse Map dated 4-1970; For Cottonwood Excercise ; Two more reduced size of Traverse Maps (identical to Item #2) 1970

Aerial photos and maps from New Mexico (Hermosa and Gila National Forest area?) c.1950

Original survey work by Jahns and his team in the area of Black Canyon, Nevada 1967

Nex Mexico maps

Penasco quadrangle (1964), U.S. Geological Survey (scale 1/24,000) 140 x 106 cm 1964

Trampas quadrangle (1953), U.S. Geological Survey (scale 1/24,000) 140 x 106 cm 1953

Gila National Forest aerial planimetric quadrangle QUAD 340 (1953) cut-out partial up to 100 x 78 cm 1953

Gila National Forest aerial planimetric quadrangle QUAD 341 (1954) cut-out partial up to 100 x 78 cm 1954

General Highway Map of Catron and Sierra Counties New Mexico, showing Continental Divide (no label or legend) c.1950

PALA area

Hand colored Topographic map of Pala area (near the town on Pala river)

Photograph sketch of minerals possibly in Pala area

Aerial photo nagatives of possibly mines in the Pala area

Hand drawn and colored, detailed maps of specific mines in Pala. No title or name on them.

Photographs of minerals from Tourmaline Queen mine

Negatives of maps of Stewart Mine

One-page introductory statement by Richard Jahns

WESTFORD & MIDDLESEX: Lowell Quadrangle (in vellum)

WESTFORD & MIDDLESEX: (Map of Westford) USGS Map of Massachusetts Middlesex County Westfor Quadrangle 7 1/2 Minute Series 1939

WESTFORD & MIDDLESEX: (Map of Westford) USGS Map of Massachusetts Middlesex County Westfor Quadrangle 7 1/2 Minute Series in coloo 1939

WESTFORD & MIDDLESEX: Miscellaneous map cut outs 1939

WESTFORD & MIDDLESEX: Overlay Map of the Glacier Geology of Parts of the Tyngsboro & Westford, Massachusetts Quadrangles

WESTFORD & MIDDLESEX: Oak Hill Quarry - Papers, photos, hand drawn mapsby R. C. Neavel 1963

WESTFORD & MIDDLESEX: Enevelope of material related to Billerica, Middlesex county : Portions of USFS topo maps, some hand colored, and hand drawn map on parchement paper of Billerica Quad.

TURNER FALLS: 2 Topographic maps with Explanation

TURNER FALLS: Sandflow, Turner Falls, MA July 16, 1948 1948

GREENFIELD: 3 B/W photos of Greenfield

GREENFIELD: 2 Topographic Map with Geologic Sections and Quadrangle names (color and B/W)

ROXBURY Q.: Roxbury distict (Index map of Drill holes and Quadrangle Sites)

ROXBURY Q.: Several pencil drawings of the area in graphic tracing papers

MISC. Q." Structure symbols to accompany the Bedrock Geologic map of the Clinton Quadrangle, Worchester County, MA 1975

MISC. Q.: Explanation for the Interim Surficial Geologic map of the Shirley Quadrangle, MA. 7/15/75 1975

MISC. Q." Tyngsboro Quadrangle

MISC. MAPS: Several sectional maps of North-Central + NE Westford pasted on the cardboard 1927

MISC. MAPS: Correspondence regarding Mount Holyoke & Greenfield Quadrangles; photocopies of related articles on Westford Q. 1964~1973

MISC. MAPS: Restoration of Chrystal Lake Boring Logs Chart (1975); Index to topographic maps of Massachusetts, Rhode Island, and Connecticut (1967); Preliminary Bedrock Geologic Map of the Westford Quadrangle, Middlesex County, MA (1975); Bedrock Exxposure Map of the Westford Quadrangle, MA (1972); a partial cutout map of Westford Q.; Part of the Billerica Quadrangle map (1939); Hand drawn Explantion of the part of the map of North Fireld, Shaw Mountain & Cram hill, Vermont (1940) 1939~1979

2 photos showing gem stones in the Pala Chief Mine.

4 plates of hand drawn gem stones.

Report of the geology of part of the Mesa Grande and Palomar Observatory Quadrangles, by G.H. Pessel, 1960 1960

Hand colored map by G.H. Pessel to go with the report

Map of Pala Chief Mine drawn by R.H. Jahns on velum 1957

W. T. Schaller's Map of Pala Mines: Stewart Hill Mine, Pala Chief Gem Mine, Banded Mine. Detailed notes and drawings. 1915

Pala Air Photos Film Negatives 1939 April 16

B/W Photos (28 copies) 1939 April 16

Pala Mine Maps: El Molino Mine, Anita Mine, Pala Chief Mine, Naylor Mine, Senpe Mine, Ocean View Mine, Vanderburg Mine, White Cloud Mine, Mission Mine, Caterina Mine 1947

Hand-drawn Geologic Maps, Pala, CA; Stewart Mine

Tourmaline Queen Mine, Pala ( photos, notes, maps) (1972); Gem Star Mine (1947); Stewart Mine (1969); Schaller's Findings, Notes (1904-1930) 1972, 1947, 1904-1930

Miscellaneous Notes, Photos, Reports, Pocket Notebook; Pala Pegmatite Belt; Other Hand-Drawn Maps; B/W phto of cystals; A Field Trip Report (4/6/1948); A Report on Stewart Mine Earning Estimation (1948); A List of Mines with owners' addresses, evaluation & etc; A pock notebook containing Toumaline Queen Mine info 1912-1980

Letters of Richard Jahns (1963, 1976); Letters of Dr. Schaller's (1915, 1924) 1915-1976

Field Work Report by D. Jerome Fisher "Some Southern California Pegmatites" (158 pages, 1944) 1943 August-September

Copies of Journal articles (1972, 1974); "The Gem Deposit of Southern California" by RHJ; Special Report "Gem - and Lithium-bearing Pegmatites of the Pala District, San Diego, California (1951) 1951-1974

Research Papers: "Variations of Silicon Isopote Ratios in a Zoned Pegmatite" by David Tilles (2 copies); "Notes on Lithium, Rubidium & Cesium and the Mineral Deposits at Pala, San Diego County, CA by F.B. Wilder (1944); "An Unusual Source of Wealth in San Diego Largest Known Deposits of Valuable Lithium Ore Located at Pala, San Diego County (1943); "The Amblygonite Group 1943-1944

Topographic Map of Pala Quadrangle (1950); Map of Spessartite Mine (1977) 1950-1977

Map with different locations of mines in Palomar Mts; Map of Stewart Mine; White Cloud Mine (1947); Miscellaneous items regarding Pala District 1947

Film Negatives and Prints: Stewart Mine, Anita Mine (1947), Ocean View Mine (1947), Pala Chief Mine (1947), Spodumene Workings 1947

B/W Photos with detailed notes and location markings (10 pieces)

3 Maps: Map of Pala Indian Reservation; Road Survey No 275-Part 2 Roads in Pala Indian Reservation (1910); County of San Diego Highway Commission - Rincon Plan Pala & Rincon (1912)

2 Maps: Palomar Observatory, California (1950); Boucher Hill, California (1948) 1948, 1950

Proposals & research materials for LANDSALIDE project: Abstract "Space-Time relationships of Landsliding on the Southerly Side of the Palos Verdes Hills, California"; Letters and proposals estimates and maps for the project (1970); Diagram of Rainfalls and B/W phtos of the area in an envelope titled E & S Rainfall Article

Igneous Rocks" Original Text & Diagrams for Printing

Maps & Charts: Rare Earth Metals & Uranium Metals; Proposed Louett Subdivision Showing Adjacent H E Fletcher Co Facilities (1976); Map of Randolph Quadrangle, VT (1933); Neatly hand-drawn maps on note pad paper "Northfield Falls Area & Survey, VT"; Geologic Structure Symbols & Fault Symbols; Systemic Microchemical Analysis; Diagram for Determination of 2V; Tables for the Determination of Detrital Minerals 1933 ~ 1976

Articles & Technical Reports: Nuclides & Isotopes General Electric (1962); Growing Importance of Urban Geology (1964); Analogs of Yuma Terrain in the Southwest United States Desert Corps of Engineers (1963); Petrology of Basalt and Andesite of the Black Range, New Mexico (1975) 1963 ~ 1975

Section of topo map of Cornwall around Nanpean and White moor with some hand made markings Not dated

2 mounted sets of aerial photos of Palos Verdes Hills (seaside pensinsula), Los Angeles County, California (1) pasted in one folder (marked "S" or "5"?) of Hawthorne Boulevard and to its south, Crest Road, and (2) poster board showing Montemalaga further west and and Paseo La Cresta to its northwest across Los Angeles County Route N7 -

Letter and B/W photos of Sebra Rock found in Mount Antero area in Colorado 1976

3 pages of Pegmatite report including Piedmont, California, Thomaston-Barnesville in Georgia, and Alabama.

Reprint from the Mineralogist. Booklet: An Unusual Beryl from Arizona. 1962

Abstract by Jahns: "Crystalization of Beryl-Bearing Pegmatite near Wright Creek, Mohave County, Arizona.

Sunrise Claim & White Jumbo Claim Drilling Plans by Pacific Coast Borax Company. Lithium investigation. Arizona.

Hand drawn map in a thick poster board: Geology of a Portion of Lucerne Valley, San Bernardino County, California 1947

Hand drawn map in a thick poster board: Geologic Map of Part of Lucerne Valley, San Bernardino County, California 1947

3 hand drawn maps of "Whirligig area 1967-1968

2 hand drawn maps of "Blackhead area" + 2 notes 1967, 1970

Plate 1 Engineering geologic map of Ladera, San Mateo Co. California by David F. Hoexter " Hand drawn notations, base for thesis "Engineering geology and relative stability of part of Ladera, San Mateo County, California 1975

Misc sketches, maps, text from mines in Mesa Grande Mining District, California

Booklet "The geology of a portion of Ravenna quadrangle" by Claude D. Fiddler 1957

Aerial photos from flight C17727 of the area of Soledad Canyon Nos. 4-104,105,106 & 12-109,110,111 1952

Sketches of trenches on plate 2 for geologic map of Diabolo Canyon coastal area in San Luis Obispo county, CA (cataloged as G9990 .J3 4363 .S27 1966 by Richard H. Jahns). Includes: Sheets 1-5 Diablo Canyon Trench, Sheets 1-2 Diablo Canyon Trench 5-8-1968, Sheets 1-2 Diablo Canyon Trench 11-10-1966, Topography at the mouth of Diablo Canyon with hand drawn schematic of trench 1966-1968

Small geological map showing faults in southern California : From Mojave desert to Mexico. (U.C. Revierside is marked on map)

Aerial photomosaic index of San Joaquin Valley, Ca. - one sheet not dated

Research Proposals & Contracts, etc: Chronological list of Important Geologic Maps of California prior to 1860; Pacoima Area Crystalline Rocks (San Gabriel Mt.);Field Excursion, Cordilleran Section (1947); Research Proposal "Geologic Significance of Contemporary Earth Movements, Los Angeles County, CA (1959);Copy of USC Thesis (1959); Red Mountain Quadrangle map lengend; (in a folder) Topographic mapping Trona California Proposal & Charge(1963); Research Proposal "Investigations of the Structural Framework of the Southern Great Basin" (1965) c.1947-1965

Maps: Geologic Map of the Corona, Elsinore, and San Luis Rey Quadrangles (1948); Anegeles National Forest California San Bernadino Meridian (1926); Cenzoic Correlation sectionacross Los Angeles Basin from Beverly Hills to Newport California (1962); Stony Island; San Gabriel Mountain area Maps, Geologic Map and Section along the 4.4-Mile Sunland Tunnels(1970), & Geologic Map and Section along the 5.5-Mile San Fernando Tunnel (1968); Geologic Map of California South Half (1972); Geologic Map of Califronia North Half (1970); San Gabriel Mountains (1954) c.1948-1972

Unidentified mine survey by Schaller a geolgoical surveyor of San Diego County, California from 1911 - photocopy 1911

Maps of the Franklin and Stone Canyons: Geologic map of vicinity of Stone Canyon and Franklin Canyon reservoirs, Geologic section through Franklin Canyon Dam sites, Geologic section through Stone Canyon Dam

Cross section of southern Death Valley region from Death Valley to Kingston Range (plate 2) - published in Bull. Geolo. Soc. Am. Vol.52, Cross section of southern Death Valley region from Death Valley to Kingston Range (plate 2), Cross Sections along lines B-B', C-C', and D-D' (Pl. 3)

Negative map of : Section HH'-H", Geology of Ventura Basin, Ventura County, California by Bailey, T.L., 1951 (from AAPG Field Trip Guidebook) 1951

2 pictures of Miraleste Tuff Bed, Palos Verdes Hills, California c.1950

Map of elfin Forest area, west of Lake Hodges, San Diego county on transparence with additional geological markings

Abstract: "Late Wisconsin and Recent Deformation in Southern Death Valley, California 1972

Imperial Valley, California. Four-pages of Geologic Cross Section Map 1929

Map of Yosemite Valley

Long Beach Harbor Department" Subsidence and Horizontal Movement in the Wilmington Oil Field. Ventura County Investigation Maps 1953

Logs, maps related to work done in Corral Canyon, Santa Monica mountains - probably evaluating it for a nuclear power plant site 1965

San Diego Mine, Mesa Grande Mining District, California - Sketches, maps, letter, photo of Tourmaline c.1950-1973

Himalaye Mine, Mesa Grande Mining District, California - Sketches, maps, text c.1948-1956

Rolled items: Unidentified mine maps from PALA Mining District, California: Hand drawn and colored, detailed maps of specific mines in Pala C.1947-1950

Several parts of topographic maps eastern part of North Carolina (Franklin to Asheville area) with hand drawn locations of mines and other information.

2 maps of Moody Mica Mine, Franklin Twp., Macon County, N.C

Sketch map of Gettys Mica Mine, Cleveland Co. , N.C. 1943

Ruby King Mica Mine, Stokes County, North Carolina 1944

Preparation sheets for "Geological map of the Crabttree area, Mitchell and Yancey counties, North Carolina 1945-46

Misc mine maps, tables, etc from North Carolina

Lantern slides (24): Before and after images from St. Francis Dam, San Francisquito Canyon in northern Los Angeles County, California c.1928

Field Scrapbook: "The Craters of Sierra del Pinacate, Sonora Mexico" , Northwestern Sonora and Crater Elegante expedition (1969 Gutmann, Donnelly, Beatty, Jahns) includes scrapbook and two unidentified photos. h Don Beattie, manager Apollo lunar surface experiments, ref. Corro Colorado, Sonora Mexico) + 3 photos USGS Flagstaff, Arizona Photo No. 106667 (2 copies) and No. 10668 1969 March - 1967 May

3 aerial photographas of craters in Pinacate area mounted on cardboard

Artifacts in corrugated cardboard Meteor Crater Arizona - 4 images December 1961 (29 x 24 cm) and a "NASA note" (May 1967 conversation(?) with Don Beattie, manager Apollo lunar surface experiments, ref. Corro Colorado, Sonora Mexico) + 3 photos USGS Flagstaff, Arizona Photo No. 106667 (2 copies) and No. 10668 1961

Pinacate U.S.G.S. oblique air photos 1965

James T. Guttman: This selection of artifacts (1976, 1977) includes correspondence, a research application from Guttman, reprints, manuscripts, and a galley proof. James T. Guttman is one of Jahns' doctoral students, who received tenure at Wesleyan (correspondence and geo-analysis with Penn State, 1977) 1976, 1977

Numbered aerial photos (Pacific Air Industries, 1952) 2-sizes 21 x 25 cm and 28 x 36 cm. 1952

Slides and prints of Pinacate Lava fields

Misc papers and photos such as: Jahns' correspondents: C.G. Espe (1964), Ronald L. Ives (1977) correspondence and photograph of Elegante, one of the craters of Sierra del Pinacate region of Sonora, Mexico (Ronald L. Ives, a University teacher of geography, whose interest and expertise from a young age was southwestern Arizona and northwestern Sonora with special interest in geology, history and folklore. He authored a reprint "The Mirages of La Encantada" Published in Weather (1968). Ives' papers are archived at Arizona Historical Society in Tucson. Contact: Rebekah Tabah-Percival: Library, Archives and Collections at 480-387-5356 e-mail rtabah@azhs.gov ) 1964, 1968, 1977

Photocopy on 5 sheets of old map "Map of southwestern Arizona & northwestern Sonora, comprising the region formerly called Papagueria

maps showing crater location of area

Collapse depressions of the Pinacate Volcanic field, Sonora, MEXICO: original, proofs, negatives, photo of: Jahns California Institute of Technology paper https://arizonageologicalsociety10.wildapricot.org/resources/Documents/Publications/Digests/Digest_02/27_AGS_DIG02_Jahns_Pinacate_Volcanic_Field-S.pdf

2 geological cross sections of unknown craters.

Rolled items: 30 sheets and a letter to Richard Jahns 24563

Geemstones and Allied Materials: figures for 1956 pamphlet, Jahns' original and final artwork 1956

TRONA: 3 sheets (III A, B and C) purple blueprints up to 107 x 138 cm, possibly of Trona dry lake bed where borax was mined in the Mojave Desert near Ridgecrest California

Drafts of plates for an article by White and Jahns from the area of Barre, Vermont (Vellum, paper)

Photocopies and vellum of maps from the area of Barre, Vermont with markings of geological data as base for geological map of the area

San Gabriel Mountains Landslides geology mapped by R. Streitz, 94 x 90 cm and larger (scale 1/9600): Preliminary Geologic Map of the SW 1/4 Glendora Quadrangle, Los Angeles County: Preliminary Geologic Map of the SW 1/4 Azusa Quadrangle, Los Angeles County, Preliminary Geologic Map of the SE 1/4 Glendora Quadrangle , Los Angeles County, Preliminary Geologic Map of the SW 1/4 Mt. Baldy Quadrangle, Los Angeles County, Preliminary Reconnaissance Map of Major Landslides, San Gabriel Mountains, California 1964-1968

Four structure sections to accompany the geologic map of the Upper Las Llajas Canyon area, Santa Susana mountains, California" by Willim D. Lewis

Imaginary map by Homer R. Dulin Company

Hand drawn map "Pidlite group, Hayden Mining Co., Geology & workings" by J.A. wood 3-23-47 1947

Map of Tennesse , Knoxville to Watunga, showing dams with hand drawn location of possibly mines

Part of "Reconnaissance geologic map of the Papago country, Arizona" by Kirk Bryan 1924

four pencil drawings of a legend and unidentified area geologic maps by Jahns, 1949-1952 1949-1952

Report B170 two photos

Report B170 figure for Southern California Known Major Deposits or Areas of Pegmatite Minerals, original pencil art, finished vellum and paper copies

(Ravenna Maps envelope) Bulletin 170 Map Sheet No. 6 Geology of the Soledad Basin, Los Angeles County by Jahns and Muehlberger, California Division of Mines, with the following related documents:

(Ravenna Maps envelope) Bulletin 170 Map Sheet No. 19 Geology of the Silurian Hills, San Bernardino County by Donald Kupfer, California Division of Mines

(Ravenna Maps envelope) Jahns, Miocene Stratigraphy of the Easternmost Ventura Basin, American Journal of Science, 1939 14550

(Ravenna Maps envelope) Jahns (partial publication, some figures and a page removed) Stratigraphy of the Easternmost Ventura Basin, California, with a Description Of a New Lower Miocene Mammalian Fauna from the Tick Canyon Formation, 1940 14763

Lang quadrangle, California, 1933 USGS topographical map cut into sections. backed with a piece of cloth and folded for field use by Jahns at Cal Tech

Ravenna quadrangle, California, photocopy of fieldwork on 1934 USGS topographical map cut into sections. backed with a piece of cloth and folded for field use by Jahns

120 X 80 cm portion of a topographic map from Laguna Beach, Mussel Cove, Niguel and the Sheep Hills to San Juan Capistrano

Topographic map (JOB NO. 3570 DWG. NO. 8) of area between Ventura Blvd. and Mulholland Road, Victor Gruen Architect A.I.A. Beverly Hills, 142 x 132 cm

Geologic map of Upper Newport Bay estuary and major stopover for birds on the Pacific Flyway, which became protected in 1975 and 1989, 45 x 43 cm 20852

(geol-fieldmapping) Yorba Linda quadrangle (1950), U.S. Geological Survey (scale 1/24,000) 58 x 48 cm

(geol-fieldmapping) Red Mountain quadrangle (Los Angeles county 1931), U.S. Geological Survey (scale 1/24,000) 46 x 38 cm

(geol-fieldmapping) La Brun quadrangle (Los Angeles county 1932), U.S. Geological Survey (scale 1/24,000) 46 x 38 cm

(geol-fieldmapping) Solstice Canyon quadrangle (Los Angeles county 1932), U.S. Geological Survey (scale 1/24,000) 46 x 38 cm

(geol-fieldmapping) Las Flores quadrangle (Los Angeles county 1932), U.S. Geological Survey (scale 1/24,000) 140 x 106 cm

San Francisquito and Bouquet Reservoir quadrangle (Los Angeles county), U.S. Geological Survey (scale 1/24,000) 76 x 68 cm

(5 sheets, only one clearly identified) Geologic Map Of Pico Anticline, Santa Susana Mountains, Summer Camp in Field Geology, California Institute of Technology . 1941

2 polaroids in brown envelope titled "P.V. Ground Failure 3/69" showing slide in Indian Peak Rd. Palos Verdes 1969

Envelope 2) Massachusetts and New Hampshire field charts. Topographic map of Westford, Massachusetts. Topographic clips (20 pieces undisturbed from 'original' order, as stored), a couple mounted on paperboard, for field use with Legend tables of colors to indicate geologic types on many clips. Lowell Quadrangle surficial geology legend. Rough legend for bedrock in Massachusetts and New Hampshire (Jahns, 1951). 1951

Folder designated "Mass Coop - Westford field sheets" (see also Envelope/Folder# 2): Westford, Massachusetts field notebook pages (Max E. Dillard, 1940-41) 20 x 13 cm Maps of Fletcher Quarry Westford, Massachusetts handmade by Jahns & Currier (1937) and Johnson & Schleicher (1964) Memos Fletcher to Jahns (1969 & 1974) Unidentified 3 tissue figures (triangular diagrams) of rock types and mineral constituents Geologic sketch map of Shelby-Hickory district, southern border of North Carolina, labelled Figure 44 Unidentified aerial photograph 23x18cm, marked H38-L-108

Hand drawn map of vicinity of Anderson Mill, Luxury Gold Mine, and Drageon mine in Arizona, Border of Yavapi and Maricopa counties

Preparation for geological map of Ojo Caliente, New Mexico 1981

Original photographic prints for article in Geochimica et Cosmochimica Acta, Vol. 38(8), Geochemistry of tourmaline (schorlite) from granites, aplites and pegmatites from Northern Portugal 1974

George A. Cumming: Geological maps of San Andreas Rift Zone (Santa Ana River and Mill Creek) with note by Jahns

North Carolina Pegmatite: Crabtree Creek Area mining notes, drawings and field maps April 1978 and Undated

Index map of Montpelier Barre area in Vermont: Geological Cross section table of Northwest Mountains, Vermont showing formation by depth accompanied by notes

Jahns - McKague - Tuttle: Three hand-drawn Figures and folder labelled "II (2) Jahns - McKague - Tuttle" (O.F. "Frank" Tuttle became Jahns' colleague while Jahns was on sabbatical leave at Pennsylvania State University from the California Institute of Technology. Tuttle was an experimental geochemist who devised the early machines and methods of achieving high fluid pressures at high temperatures, thereby enabling investigations of the effects of H2O on the silicate liquids derived from rock-forming systems under pressure. Jahns and Tuttle (1963) began by distinguishing occurrences of igneous rocks of granitic composition with the textures of aplite (very fine-grained granular texture) and pegmatite (variable but very coarse texture).

Verde Valley impact area: Six hand-drawn maps showing distribution "from source crater (Map 3)" of area covered by greenish gravels in green clay matrix (114 x 93 cm) unidentified

Isometric fence DIiagrmas: showing diagrammatically the relative thicknesses, continuity and attitudes of "beds" with four drawings numbered IA (2 copies), IB, IC and ID "in area of main quarry" and dated by "R.H. Jahns 9/61 22525

Southern California Pegmatite: Several mines once were in operation in the San Jacinto district north of the Riverside-San Diego county line, which gave a valuable output from gem pockets for several years. The one that was most prominent is Fano Mine, discovered and located in 1902 by Bert Simmons, but now owned by E. A. Fano of San Diego and formally known as the Fano-Kunzite Tourmaline Mining Company, on the north side of Cahuilla (also on maps as Coahuila) Mountain, at an altitude of some 4,500 feet, about a mile south of Bautista Creek, 4 miles west of the Ramona Indian Reservation and 3 miles north of the Cahuilla Indian Reservation. The mine consisted of 4 claims. The nearest post office is Hemet. The pegmatite is finely crystallized, and resembles that of other tourmaline and kunzite mines in San Diego County.: Fig. 1 Map of California Localities (a guide to map fragments in this envelope) hand drawn 22 x 15 cm, from San Jacinto and Hemet in the north, including the Fano mine, to the Mexican border and showing areas of igneous gabbro. Geologic Maps of the Jurupa Mountains and Jensen's Quarry 4 pages of correspondence Burt Simmons (see above description) 1916, Victor Mime(?) 1915, D.J. Fischer 1944 1915, 1944, 1949-1950

WHITE OAKS MINING DISTRICT, NEW MEXICO: miscellaneous notes, communications and analyses 1972-1974

Material regarding Little Tujunga area, San Gabriel mountains. (probably prep material for an article) 1951

2 maps, geologic cross section and geologic map of the American river used as preparation for thesis "Tunnel route geology of the American River project, California" by John Lynn Redmond 1961-1962

Richard H. Jahns Unidentified publications, artwork, keepsakes and historical artifacts.

Rolled maps: Metropolitan water district of southern california - geological maps and sections of foothill feeder tunnels : La Canada tunnel, Santa Anita tunnel (2 drawings), Altadena tunnel, Verdugo tunnel, Glendora tunnel 1967-1970