| Owner | Count | 1.
| Zottoli, Robert A., Mrs., Ashby, Massachusetts | 1 | 2.
| Zowe, Ferdinand J., Fayetteville, North Carolina | 1 | 3.
| Zuccotti Park, New York, New York | 1 | 4.
| Zuckerman, Paul, Franklin, Michigan | 1 | 5.
| Zuiderzee Museum, Enkhuizen, Netherlands | 1 | 6.
| Zukowski, Vellah, Clayton, California | 4 | 7.
| Zulalian, Harold, | 1 | 8.
| Zullo, Katrina Kehs, Allentown, Pennsylvania | 1 | 9.
| Zung, Thomas, Cleveland, Ohio | 1 | 10.
| Zurko, Margery Burritt Osterhoudt, Mrs., Milford, Connecticut | 1 |
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