1938. Mammals of Zion-Bryce and Cedar Breaks. Zion-Bryce Mus. Bull., 2:1-20, January, 1938.

Warren, Edward R. and Hall, E. Raymond.

1939. A new subspecies of beaver from Colorado. Journ. Mamm., 20:358-362, 1 map, August 14, 1939.

Transmitted, May 15, 1948.

22-3716