Marshall, Sue. An Evaluation of the Geology, Hydrology, Geochemistry and Geophysics of Desert Hot Springs, California, report, September 9, 1975; (https://digital.library.unt.edu/ark:/67531/metadc891911/m1/1/: accessed November 17, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .