Text

Margaret Hollyday to Viktor Hamburger, November 1, 1976
Enclosed embryo maps. Update on research
Unclear, 1928
Typewritten
Hans Spemann to Viktor Hamburger, 1935
Handwritten
Hans Spemann to Viktor Hamburger, 1927
Handwritten
G. Schmidt and M. N. Ragosina to Viktor Hamburger, 1962
Typewritten
Unclear to Viktor Hamburger, 1932
Handwritten
Hans Spemann to Viktor Hamburger, 1927
Handwritten
Hans Spemann to Viktor Hamburger, 1924
Handwritten
G. Schmidt to Viktor Hamburger, 1976
Typewritten
Hans Spemann to Unclear, 1937
a letter and its translation in which Hans Spemann dicusses Woods Hole and lectures
"Comments on the Vitalistic Philosophy of Spemann," 1970s
Typewritten
Rita Levi-Montalcini to Viktor Hamburger, November 5, 1955
Experimental updates. Plans for travel

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