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1. Document, 1785 December n.d.
Ewing, John
- Date: 1785 December n.d.
- Item in Context: https://dlc.library.columbia.edu/jay/ldpd:71844
2. Oral history interview with John and Betty Ewing 1997
Ewing, John
- Name: Ewing, John (Interviewee)
- Collection Name: Lamont-Doherty Earth Observatory oral history collection
- Date: 1997