The California Geological Survey--for graciously allowing me to use the paleogeographic map and the drawings of Pleistocene Rancho La Brea animals.

The United States Geological Survey--for keeping all of their publications in the Public Domain, a designation that allowed me to place on-line at this site, without any manner of written permission, United States Geological Survey Professional Paper 264-J, Fossils Birds From Manix Lake California, by Hildegarde Howard, originally issued in 1955.

Dr. Rickard Toomey, Mona Colburn and Karli White of the Illinois State Museum--for helping to identify fossil bird and mammal material from the Upper Pleistocene Manix Formation.

Dr. Storrs L. Olson, Division of Birds, National Museum of Natural History Smithsonian Institution--for helping to identify the fossil bird remains from the Upper Pleistocene Manix Formation.

Dr. J. D. Stewart of the Natural History Museum of Los Angeles County--for helping to identify bones from the "Manix Fish," the Tui Mojave Chub.

Mr. George T. Jefferson, vertebrate paleontologist with the Colorado Desert District Stout Research Center Anza-Borrego Desert State Park, California--for helping to identify the fossil mammalian material from the Upper Pleistocene Manix Formation. Also, I would like to acknowledge the many scientific contributions of Mr. Jefferson, from whose published writings I obtained much of the information on the Manix Formation.