each signed, titled, inscribed and dated "ESTIMATING AN 8" x 8" SQUARE RED LINE: DRAWN FIRST, FREE HAND GREY LINE: DRAWN SECOND, MEASURED MEL BOCHNER, 1972" lower left

pencil and colored pencil on paper, in 2 parts

each 11 x 14 in. (27.9 x 35.6 cm.)

Executed in 1972.