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Titles
- Postcard from American Men of Science to Joshua Lederberg1
- Postcard from Barbara J. Bachmann to Hela Bursztyn-Pettegrew1
- Postcard from Barbara J. Bachmann to Joshua Lederberg1
- Postcard from Bonnie Fermon to Joshua Lederberg1
- Postcard from Columbia University to Joshua Lederberg1
- Postcard from Daphne Productions to Sylvia Frank1
- Postcard from David M. Bonner to Joshua Lederberg1
- Postcard from Edward L. Tatum to Joshua Lederberg1
- Postcard from F. Egami to Joshua Lederberg1
- Postcard from F. Egami to Joshua and Esther Lederberg1
- Postcard from Frank R. Mayo to Joshua Lederberg1
- Postcard from George Klein to Joshua Lederberg1
- Postcard from Guido Pontecorvo to Joshua Lederberg1
- Postcard from Guiseppe Bertani to Joshua Lederberg1
- Postcard from H. Bentley Glass to Joshua Lederberg1
- Postcard from H. Gobind Khorana to Joshua Lederberg1
- Postcard from Helen V. Crouse to Joshua Lederberg1
- Postcard from Hilary Koprowski to Joshua Lederberg1
- Postcard from James D. Watson to Joshua Lederberg1
- Postcard from Jean Cook to Joshua Lederberg1