Correspondence
Max Delbrueck writes about a recent trip to Europe, where he met Werner Brock, who sends his regards to Hamburger
Short remarks on the organizer and on neural darwininism.
On obtaining Salamander eggs.
On Wenger's successful application for a Heermans Fellowshipin 1948-49.
Personnel discussions
Handwritten letter, 1 page
On his situation in military service.
On Weiss' appointment as visiting professor of zoology at Washington University in February, March, April, and, partly May, 1947.
Letter in German from Yale University about staying with Aunt Clara, mentions Salome Glucksohn
Discussions on personnel
Plans for future research
Discussion of Hamburger's book on Spemann and the Organizer