This letter from U.S. House Representative G.N. Haugen, acknowledges the receipt of a letter from Keyes who asks him to extend protected status to the American bald eagle.
This is a list of 38 publications spanning 1893 through 1951 by Charles Rueben Keyes compiled by Dr. J. Harold Ennis in the Journal of the Archeological Society, vol 1, No. 2, January 1952
This is a letter from Arthur Cleveland Bent from the Smithsonian Institution thanking Dr. Keyes for agreeing to contribute to the book Life Histories of North American Birds that Mr. Bent is working on.
A.C. Bent, of the Smithsonian Institution, is responding to Keyes' letter about the loss of water fowl in Iowa and telling him about his progress on the book he is writing.
