Warren A. Beck , Professor of History at California State University, Fullerton, has been widely published in western American history. He is the coauthor of the much-praised Historical Atlas of California and Historical Atlas of New Mexico , also published by the University of Oklahoma Press.
Ynez D. Haase, a professional cartographer who lived in Fillmore, California,was the coauthor of the much-praised Historical Atlas of California and Historical Atlas of New Mexico, published by the University of Oklahoma Press.