Writings and speeches, photographs, correspondence, and printed matter, relating to Joseph S. Marriott's career in the Civil Aeronautics Administration and its predecessor, the Bureau of Air Commerce, with special reference to the states of California, Hawaii, Arizona, and Utah.

Historical account books of mining companies and businesses (1861-circa 1900), photograph album (circa 1890s-1940s), diary, correspondence, Meadows miscellany (1960s-1980s), Honnold Library Society (1973-1979).

Metropolitan Water District reports, publications, correspondence, clippings, and meeting minutes.

John Treanor was vice-president of the San Diego Water Company. He purchased the land to build Henshaw Reservoir and then later Hodges Dam and reservoir. In addition, he was on the Board of Trustees at Pomona College in the early 20th century. (Treanor, Thomas. John Treanor A Sketch of his Life wiht Excerpts from His Letters, Los Angeles, Zamorano Club, 1937.)

This collection contains Weymouth's personal papers including correspondence, his publications and speeches, and photographs all relating to the Metropolitan Water District of Southern California, the construction of Boulder Dam (Hoover Dam) and the Colorado River Aqueduct from 1894-1941.

In 1894 and 1895 Owen Wister, in search of authentic Western material for his writing, spent some time on a ranch at Apache Tejo in southwestern New Mexico. The people he met at Apache Tejo were the inspirations for his famous novel, the Virginian.