Comprises a variety of ephemera relating to the history, growth, and development of California's counties between the years
1850 and 2004. Particularly well-documented are efforts to promote individual counties -- and their commercial, industrial,
educational, cultural, and recreational prospects -- to new migrants in the late 19th and early 20th centuries, as reflected
in the promotional literature of chambers of commerce, real estate companies, trade associations, banks, mining companies,
hotels, resorts, sanitariums, and other organizations.