John Frederick Block, M.D.
1904 - 1993 (88 years)
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| John Frederick Block, M.D. 1904-1993 |
| John Frederick Block, M.D. | |
| B: | 6 Dec 1904 |
| Baltimore, Maryland, USA | |
| D: | 1 Mar 1993 |
| Baltimore, Maryland, USA | |
 | Florence Catherine Howard 1916-1985 |
| Florence Catherine Howard | |
| B: | 5 Jan 1916 |
| Wilmington, New Castle, Delaware | |
| M: | Aft 1968 |
| D: | 14 Nov 1985 |
| Baltimore City, Maryland, USA | |