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J. A. A. AMERICAN MUSEUM OF NATURAL HISTORY 77TH STREET AND CENTRAL PARK WEST NEW YORK February 24, 1910. DEPARTMENT OF MAMMALOGY AND ORNITHOLOGY Dear Dr. True:- Your letter of February 21, in reference to the proof of your paper was duly received. I have delayed responding until I received proof of the plates which was delivered only an hour ago. I am returning the original photograph and two sets of the proof. I beg you will make up the plates as you wish them to appear, and furnish the necessary legends, and also any references to them in the text that may be required. Trusting to receive the proofs back at your early convenience, Very truly yours, J A. Allen Dr. F. A. True, U. S. National Museum, Washington, D. C.