KENT, ROCKWELL. "The Modern School." Original watercolor study for cover design of Carl Zigrosser's The Modern School (1917). 88 x 85 mm. (3½ x 3 3/8 in.), on india paper and mounted on board, lower left corner chipped (touching paper, but not affecting image). [With:] A copy of Zigrosser's The Modern School (Stelton, N.J., [1917?]). 12mo, original pictorial wrappers. (2)