Grids, using straight, not-straight lines & broken lines in all their possible combinations, New York City : Parasol Press, 1973

Bound portfolio of twenty-eight etchings
28 × 28 cm (11 × 11 in.)
Princeton University Library. Rare Books and Special Collections, Graphic Arts Collection, Laura P. Hall Memorial Fund
© Sol LeWitt/Artists Rights Society (ARS), New York