The Sinsheimer Collection contains nineteenth- and early twentieth-century business, personal, and political papers of the
Sinsheimers, a prominent and pioneering mercantile family of San Luis Obispo, California. Of German-Jewish extraction, Sinsheimer
brothers Bernhard and Henry and half-brother A. Z. migrated to California following the Civil War, starting a general merchandise
store in San Luis Obispo in 1876. One of A.Z.'s sons, Louis F. Sinsheimer, served as mayor of San Luis Obispo from 1919-1939,
a period of great advances in the city's infrastructure. Spanning four generations, this is an unusually rich collection,
documenting the family's business, political, and personal interests. The collection is comprised of roughly 105 linear feet
of family correspondence and memorabilia; business correspondence and ledgers; financial records and invoices; business, personal
and political ephemera; personal diaries, daybooks, notebooks and calendars; photographic prints and negatives; newspapers,
blueprints, maps, and artifacts.
The collection was donated by the Sinsheimer heirs in 1987.
In order to reproduce, publish, broadcast, exhibit, and/or quote from this material, researchers must submit a written request
and obtain formal permission from Special Collections, Cal Poly, as the owner of the physical collection. Researchers should
also consult with an appropriate staff member regarding literary or other intellectual property rights pertaining to this
Collection is open to qualified researchers by appointment only. Portions of the collection are stored off-site and require
advance notice for use. For more information on access policies and to obtain a copy of the Researcher Registration form,
please visit the Special Collections Access page.