Image depicts two seperate works. The work on the left-hand side (verso) was created in 1955 and measures 15 5/8 x 17 3/16 x 2 3/8 in. The work on the right-hand side (recto) was created in 1953 and measures 18 15/16 x 11 3/4 x 6 9/16 in.
McShine, Kynaston, ed., "Joseph Cornell," New York, NY: Museum of Modern Art, 1980.