American Defense Group records, 1941-1944.

California Institute of Technology

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United States. Office of Strategic Services

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The special operations Branch, Office of Strategic Services, London was charged with conducting in enemy or enemy-occupied territories of the European Theater, sabotage operations, the support and supply of resistance groups, and guerrilla warfare. From the description of OSS/London: Special Operations Branch and Secret Intelligence Branch war diaries, 1944, [microfilm]. (Unknown). WorldCat record id: 122640182 ...

United States. Office of Naval Intelligence

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Mount Wilson Observatory

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Founded in December 1904 by George Ellery Hale and funded by the Carnegie Institution, the Mount Wilson Observatory quickly became one of the 20th century's major astronomical research centers. Located just north of Los Angeles high atop the San Gabriel Mountains, the observatory took full advantage of Southern California's clear nights and uniquely steady air. The observatory's 60" telescope completed in 1908 was the largest then in existence. In 1917, another Mount Wilson telescope, 100" in di...

American Defense Group

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Group consisting largely of professors from Henry E. Huntington Library, California Institute of Technology, and Mount Wilson Observatory who assisted the U.S. war effort by reading foreign language domestic publications and reporting editorial comment to U.S. Naval Intelligence which was passed on to U.S. Office of Strategic Services. From the description of American Defense Group records, 1941-1944. (Rice University). WorldCat record id: 28424682 ...

Henry E. Huntington Library and Art Gallery.

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