Abbott Handerson Thayer is an American painter, naturalist, and prominent figure of the American Renaissance movement. Trained in Paris under French Academic master Jean-Léon Gérôme, Thayer developed a distinct style positioned at the intersection of Academic Art, Symbolism, and American Impressionism, pairing refined figure modeling with heavy, expressive impasto in drapery and foliage. He is best remembered for his idealized, winged female allegories and portraits frequently modeled by his children, as well as his groundbreaking scientific work on animal coloration—specifically "Thayer's Law" of countershading—which directly influenced the development of military camouflage during World War I.