1989
Collectors Committee, 1988
Robert Mangold, 1975
Collectors Committee, 1989
Collectors Committee, 1928
Collectors Committee, 1972
Collectors Committee, 1990
Collectors Committee, 2000
Robert Mangold, 2006
Collectors Committee, 1992
Robert Mangold, 1973
![Untitled: Four Etchings [D]](https://api.nga.gov/iiif/90f2138d-c6c7-44cf-b739-f3bcf92b7ce3/full/843,/0/default.jpg)
![[title not known]](https://media.tate.org.uk/art/images/work/P/P07/P07084_10.jpg)
