Collection of 3 x 5.5-in. black-and-white photographic prints taken by Charles H. Lee, covering a wide range of water resources development projects in California and New Mexico in which Lee was involved. Major projects documented include the construction of the Los Angeles Aqueduct, various dams and reservoirs in San Diego County and other Southern California locations, water development in Inyo and Mono Counties, and construction of Elephant Butte Dam in New Mexico. Also included are many views of the Sierra Nevada Mountains, Yosemite Valley, and the aftermath of the San Francisco earthquake and fire of 1906.