Manuscripts
Douglas W. Sprague papers
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Correspondence -- To Ms. Denis Jones, Executive Director, California Mining Association from Douglas W. Sprague, (2000, July 10)
Manuscripts
The first series consists of material related to Douglas W. Sprague's tenure as a member and executive officer of the California State Mining and Geology Board from 1976 through 1985.
mssSprague2
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Reminiscences -- State Mining & Geology Board - Reminiscences of a Member and Its Special Representative, from 1976 to 1984; by Douglas W. Sprague, (2012, Mar. 11)
Manuscripts
The first series consists of material related to Douglas W. Sprague's tenure as a member and executive officer of the California State Mining and Geology Board from 1976 through 1985.
mssSprague2
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Reports -- Economics of Mining and Processing Sand, Rock and Gravel from an Offshore Aggregate Deposit Near San Diego, California by Douglas W. Sprague, (1971)
Manuscripts
The first series consists of material related to Douglas W. Sprague's tenure as a member and executive officer of the California State Mining and Geology Board from 1976 through 1985.
mssSprague2
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Masters theses -- Geology and Economic Significance of Pleistocene Channel and Terrace Deposits of the San Diego Mainland Shelf, California by Douglas W. Sprague, (1971, June)
Manuscripts
The first series consists of material related to Douglas W. Sprague's tenure as a member and executive officer of the California State Mining and Geology Board from 1976 through 1985.
mssSprague2
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Papers (documents) -- Conservation of Mineral Resources (California's Balanced Approach) by Jan Denton, (1982, Oct.)
Manuscripts
The first series consists of material related to Douglas W. Sprague's tenure as a member and executive officer of the California State Mining and Geology Board from 1976 through 1985.
mssSprague2
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Correspondence -- Miscellaneous, (1980-2008)
Manuscripts
The first series consists of material related to Douglas W. Sprague's tenure as a member and executive officer of the California State Mining and Geology Board from 1976 through 1985.
mssSprague2