21. Michael Heidelberger in his New York University School of Medicine office

Date:

[4 January 1968]

22. Michael Heidelberger, age 99

Date:

May 1987

23. Michael Heidelberger at the award ceremony for the Emil von Behring prizes at Philipps University in Marburg, Germany

Date:

[15 March 1954]

24. Michael Heidelberger arriving in Frankfurt, Germany, on his way to the Emil von Behring prizes award ceremony at Philipps University in Marburg, Germany

Date:

[15 March 1954]

25. Walter A. Jacobs

Date:

[Between 1912 and 1922]

26. Michael Heidelberger at the 1988 Meeting of the Federation of American Societies for Experimental Biology (FASEB)

Date:

[3 May 1988]

27. Walter W. Palmer

Date:

[1930s]

28. Michael Heidelberger

Date:

21 November 1978

29. Participants at the National Academy of Sciences Conference on Complement

Date:

[1950]

30. Michael Heidelberger

Date:

[1954 or 1955]