Source(s); Report of a Geological Reconnaissance in California by William Phipps Blake made during an expedition lead by Lieutenant Robert Stockton Williamson p. iii, 89, 94 - 106 and The Salton Sea - A Study of the Geography, the Geology, The Floristics, and the Ecology of a Desert Basin by Daniel Trembly MacDougal and Collaborators - 1914 p. 17 and 23 and The Salton Sea - Geology, History, Potential Problems, Politics, and Possible Futures of an Unnatural Desert Salt Lake by Larry C. Oglesby - 2005 p. 3-5, 9-11, and 30-35 as part of Memoirs of the Southern California Academy of Sciences (first published 1938) and USGS Bulletin 845 - Guidebook of the Western United States Part F. - 1933 by USA Government Printing Office p. 248, 251, 254
Image(s); Recognition on Space Photographs of Structural Elements of Baja California from the United States Department of the Interior - 1971 - NASA Apollo 9 taken March 11, 1969
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Additional information from: Wikipedia
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Note(s); It is interesting to note that modern day Palm Springs, CA, USA is not named for palm trees, but rather the palm of God's hand.
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The Salton Sea - Geology, History, Potential Problems, Politics, and Possible Futures of an Unnatural Desert Salt Lake
It is worth noting that almost one third of this book is devoted to bibliographical references which indicates an extensive depth of research.
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Additional information from: USGS