Created by Robert Motherwell in 1988, Three Forms is an etching and aquatint in colors on German etching paper. Hand-initialed in pencil and numbered from the edition of 50, the artwork measures 19 5/8 x 31 1/8 in. (50 x 78.9 cm), unframed. The edition was co-published by the artist and Waddington, Graphics, London, with their blindstamps.