Bibliography of the Grand Canyon and the lower Colorado River from 1540, with contributions by G.H. Billingsley, W.J. Breed, R.C. Euler, D.A. House, G. Keroher, V. Meyer, R. Quartaroli, and L.E. Stevens

Spamer, E.E., comp., 1990, Bibliography of the Grand Canyon and the lower Colorado River from 1540, with contributions by G.H. Billingsley, W.J. Breed, R.C. Euler, D.A. House, G. Keroher, V. Meyer, R. Quartaroli, and L.E. Stevens: Grand Canyon Natural History Association Monograph no. 8, 358 p.