Charles E. Burchfield (1893-1967), Untitled [crow conventions) from the folio: SPRING – WIND – FANTASY – MOOD – FF, undated; conté crayon on paper, 11 x 17 ¼ inches; Burchfield Penney Art Center, Charles E. Burchfield Foundation Archives, Gift of the Charles E. Burchfield Foundation, Inc., 2006