Birds of Colorado, volume one.

Denver: Denver Museum of Natural History, 1965.
Quarto, dustwrapper, 454 pp. colour plates, photographs, very good copy in chipped dustwrapper. Inscribed to Mr. and Mrs. R. T. M. Pescott by the authors, April 12, 1966. Letters and newspaper clippings about Alfred Bailey's death from Muriel Bailey tipped in.