Daily: 10 A.M.–5 P.M.
Closed on Tuesdays
1151 Oxford Road
San Marino, CA 91108
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Manuscripts
The Henry H. Sinclair papers number more than 1,600 items, including diaries, journals, newspaper clippings, and extensive personal and business correspondence. The complete date range is 1802-1937 (bulk dates 1909-1914). Subject matter includes mostly business matters of the Great Western Power Company, Palmer Oil Company, Mt. Hood Railway and Power Company, etc.; diaries and notebooks concerning power plant inspection trips, mostly to the Kern River in California; the Pasadena Tournament of Roses Association; the California to Honolulu yacht races. The collection also includes the papers of his son, Arthur W. Sinclair, pertaining to California Delta Farms, Inc. The collection also contains a diploma from Sinclair's membership in the American Institute of Electric Engineers and a manuscript, by Englishman Thomas Cowper, of calculations regarding a solar eclipse on June 24, 1778.
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Manuscripts
Handwritten, autobiographical memoir, 50 pages; and the beginning of a personal letter which begins, "My dear Mother..."
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Manuscripts
Personal and professional diary of activities for the time period.
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Manuscripts
Detailed notes about personal and work appointments, weather. Very few skipped days.
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Manuscripts
Notations cover both personal and business matters. Other notes include comments about weather, health, etc.
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