Birds of the Rockies, L. S. Keyser
California and the Southwest, F. W. Martin
California Desert Trails, Joseph, S. Chase
California Missions and Landmarks, Mrs. A. S. C. Forbes
California Tourist’s Guide, Wells Drury
California Wild Flowers, Theodore Payne
Designs on Prehistoric Pottery, J. W. Fewkes
Fifteen Thousand Miles by Stage, C. A. Strahorn
Flora of Middle Western California, Jepson
Flora of the Rocky Mountains and Adjacent Plains, P. A. Rydberg