Contains correspondence, news clippings, statements, congressional reports, and notes and information from 1954 to 1957 about anti-Colorado River Storage Project views.

Contains correspondence and a congressional record from 1957 concerning the Paonia Project in Colorado, part of the Colorado River Storage Project.

Contains general correspondence from 1934 to 1958 concerning the Colorado River Project in the Western United States.

Contains maps, statements and reports made by Watkins, statements made by other congressmen, and a hearing concerning the Colorado River Storage Project in the Western United States. Also included are pamphlets and information, voting patterns, statistics and cost comparisons, and notes concerning the Colorado River Storage Project. Also included is a comparison of the High Hells Canyon Project and the Colorado River Storage Project. Materials originate from 1935 to 1971.

Contains minutes from a meeting of the Colorado Drainage Basin Committee and the Bonneville Drainage Basin Committee concerning the Colorado River Storage Project, correspondence concerning water sites of the Colorado River Storage Project, a chronology of the Colorado River Storage Project, and other documents relating to the Colorado River Storage Project in the Western United States from 1904 to 1956.

Contains materials intended for a book about reclamation. It contains notes by Watkins for a book to be written on reclamation, correspondence, news clippings, notes, information, reports, and brochures from 1939 to 1970 concerning reclamation in the Western United States. Also includes information on the Colorado River Storage Project.

Contains correspondence, news clippings, press releases, pamphlets and brochures, statements, reports and memos, and information from 1954 to 1958 regarding pro-Colorado River Storage Project views.

Contains correspondence, newspaper articles, and manuscripts regarding Indian Affairs in the United States between 1946 and 1970. It also includes material on education, self-government, religion, health care, and other related materials.

Contains correspondence from March to April 1956 and news clippings from 1954 and 1956 to 1958 concerning the Arizona vs. California case of 1954. It also contains a copy and notes of the testimony of Paul D. Christensen given in August 1956 and government reports and record from the Supreme Court concerning the Arizona vs. California case of 1954.

Contains correspondence, clippings, reports, publications, and other material related to the Colorado River Storage Project. Includes information on project's history, legislation surrounding the project, and correspondence with citizens and professional groups. Also includes material on various construction projects undertaken as part of the larger project, including construction in Utah. Materials date from between 1902 and 1973.