Correspondence
On Rolf and Eveline Lehmann as lab visitors. On Holtfreter's and Hamburger's long-term friendship.
Congratulations to Hamburger on winning og Lashley Award from American Philosophical Society for neuroembryology, comment by author on own struggles with cancer
On his recent trip to Puerto Rico.
On his trip to the French Caribbean. On recent research results on amphibian development by Holtfreter's students.
Invitation to Schleidt to visit, offer to pay expenses
Letter about Cairns's manuscript
Discussion of the Rubezahl story, now being translated - Hamburger had one of the few copies and gave it to Segal
Letter about visiting St. Louis and his move to Buffalo
Jack Cairns grant application to the American Cancer Society
Letter describing his position at the Roswell Park Memorial Institute
thank you for meeting and for visiting Ray Wattersen while sick in Iowa ~1983/84
On becoming Tracy H. Harris Professor of Zoology in 1964. On Holtfreter's paper dedicated to Hamburger's 65th birthday. On a conference on "Epithelial-mesenychmal interactions". On Rolf and Eveline Lehmann from Freiburg visiting Holtfreter's lab.