Davidson, George, 1825-1911.
George Davidson biography and essay on irrigation, May, 1879.
Phelps, Alonzo.
A.L. Bancroft & Company.
U.S. Coast and Geodetic Survey
Irrigation -- California.
Astronomy -- 19th century.
History of science and technology collection.
AIP-ICOS
University of California, Berkeley. The Bancroft Library. Berkeley, CA, 94720-6000, USA