Dorothy Dehner (1901-1994) - Cast paper relief with penciled gray surface, numbered 5/50, signed, 1987. Unique process that combines a sculptural cast, enhanced with pencil gray tone. Image size - 12"h x 20"w, unframed. This may be the only artist signed work.
Her work is numerous prominent museum collections (see links below)
Dorothy Dehner - https://en.wikipedia.org/wiki/Dorothy_Dehner