Charles E. Burchfield (1893-1967), Study for Solitude, 1917 and undated; conté crayon on paper, 11 11/16 x 16 1/2 inches (Frame: 19 1/4 x 25 1/4 inches); Burchfield Penney Art Center, The Charles Rand Penney Collection of Work by Charles E. Burchfield, 1994