| Owner | Count | 1.
| Schweitzer Gallery & Graham Gallery, New York, New York | 1 | 2.
| Schweitzer Gallery, New York, New York | 171 | 3.
| Schweitzer, M. R., | 4 | 4.
| Schweitzer, M. R., Mr, New York, New York | 1 | 5.
| Schweitzer, M. R., New York, New York | 1 | 6.
| Schweitzer Mountain Ski Resort, Sandpoint, Idaho | 1 | 7.
| Schweitzer Mountain Village, Sandpoint, Idaho | 1 | 8.
| Schweitzer, New York, New York | 2 | 9.
| Schweitzer, New York, New York | 2 | 10.
| Schwenk, John, Boyertown, Pennsylvania | 1 |
|