Charles E. Burchfield (1893-1967), Studies of Horse Chestnut Stems (Simulating Trees), 1924; graphite on paper, 10 1/8 x 8 7/8 inches (Frame: 16 3/4 x 15 3/4 inches ); Burchfield Penney Art Center, The Charles Rand Penney Collection of Work by Charles E. Burchfield, 1994