| Owner | Count | 1.
| Ruger, William B., | 165 | 2.
| Rugg, Gertrude, Orange, Massachusetts | 1 | 3.
| Ruggles, Helen E., Reading, Massachusetts | 4 | 4.
| Ruhf, Fannie, Portland, Oregon | 1 | 5.
| Ruhne, Svend B., Mr & Mrs, Santa Cruz, California | 1 | 6.
| Ruiz, Roger, Fairbanks, Alaska | 2 | 7.
| Rullman, Walter, Mrs., Red Bank, New Jersey | 1 | 8.
| Rulon, J. Thomas, Dr & Mrs, | 1 | 9.
| Rulon, J. Thomas, Mr & Mrs, | 1 | 10.
| Rumbough, J. Wright, Mrs, New York, New York | 1 |
|