Abbott Handerson Thayer, The Sky Simulated By Red Flamingoes, Study For Book Concealing Coloration In The Animal Kingdom, Ca. 1905-1909, Oil On Wood, 9 1/4 X 9 5/8 In. (23.6 X 24.5 Cm), Smithsonian American Art Museum, Gift Of The Heirs Of Abbott Handerson Thayer, 1950.2.2