The Western Waters Digital Library has a bunch of resources on Lake Mead from a variety of institutions. Here is a sampling of the type of information you can find:
Photograph of Lost City restorations and Lake Mead, Nevada, 1938 from the University of Nevada, Las Vegas.
Lake Mead and Lake Powell salinity reports, from Digital Scholarship@UNLV.
Statement before the Parks and Recreation subcommittee on the Senate Interior and Insular Affairs Committee, on recreation responsibilities, from Digital Collections of Colorado.
Photograph of U. S. Navy deep-sea divers conducting Lake Mead sedimentation survey, circa 1948 from the University of Nevada, Las Vegas.
Request by Mexico for Colorado River water in excess of 1962 schedule under Treaty of February 3, 1944 (July 27, 1962), from the University of Arizona.
Topographic map of the Las Vegas Valley area, 1959 from the University of Nevada, Las Vegas.
Find out more about Lake Mead in the Western Waters Digital Library!