| Name | Count | Years active |
|---|---|---|
| Westmoreland Museum of Art | 3 | 1987-1988 |
| United Nations | 3 | 1981-1982 |
| Community for Creative Non-violence | 3 | 1986 |
| National Art Education Association | 2 | 1968-1969 |
| SANNO Institute of Business Administration | 2 | 1979 |
| Fotonovel Publications | 2 | 1979 |
| Malcolm House Publications | 2 | 1975, 1978 |
| Graphics Communications Associates | 2 | 1982 |
| American Concrete Institute | 2 | 1981 |
| s.n.] | 2 | 1978, 1991 |