Compiled and Edited by Earle E. Spamer, the bibliography lists more than 25,000 items produced between 1540 and the present. It includes books, periodicals, serials, maps, audio-visual works, and electronic media in 34 subject areas. Coverage includes the Grand Canyon of Arizona and the lower Colorado River corridor between Glen Canyon Dam, Arizona, and the Colorado River delta in Mexico. Greatly expanded and revised from earlier editions published by Grand Canyon Natural History Association.

Internet Edition Contributors Richard D. Quartaroli and Daniel F. Cassidy.