John Frederick Block, M.D.
1904 - 1993 (88 years)
(
= Descendancy chart to this point, 
= Expand, 
= Collapse)
- 1 John Frederick Block, M.D. [1] b. 6 Dec 1904 d. 1 Mar 1993
- + Florence Catherine Howard b. 5 Jan 1916 d. 14 Nov 1985
- + Florence Catherine Howard b. 5 Jan 1916 d. 14 Nov 1985