Gerald H. Thayer, Concealing-Coloration in the Animal Kingdom (New York: Macmillan, 1909). With introductory essay by Abbott H. Thayer and illustrations by the Thayers, Richard Meryman, and others. Inscribed on the front free endpaper "To Miss Hannah Harrington with warmest Christmas Greetings from the Thayers who made this book." Includes first Rockwell Kent illustration to appear in a book.