Bishop, Isabel (American 1902-1988). THE WALL AT UNION SQUARE Drawing, pencil on paper, not dated. Signed in pencil, lower right. 4 x 5 inches (main image), 7 7/8 x 7 1/2 inches (sheet). There are additional sketches in the margin, all related to the main subject. A few small spots in the margin, well away from the images, else in very good condition.