This collection contains diaries, journals, and extensive personal and business correspondence of Henry Harbinson Sinclair (1858-1914), a hydro-electrical engineer and entrepreneur active in California from 1887 until 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; and the California to Honolulu yacht races. The collection also includes the papers of his son, Arthur W. Sinclair, pertaining to California Delta Farms, Inc.

Henry Harbinson Sinclair (1858-1914) was a hydro-electrical engineer and entrepreneur active in California from 1887 until 1914. Born December 22, 1858, Sinclair was a native of Brooklyn, New York. Sinclair married the former Agnes Rowley, also of Brooklyn. The couple had two children, a son, Arthur W. Sinclair, and a daughter, Marjorie Sinclair.

1,681 pieces in 8 boxes and 1 rolled item

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