Correspondence
Typed letter, 1 page
Typed letter, 2 pages
Typed letter, 2 pages
Typewritten letter, 1 page, with handwritten note signed 'Ron'
Typed letter, 1 page
Typed letter, 1 page
Request for recommendation for the Guggenheim Memorial Foundation, and discussions about unified mechanisms of several behaviors in chicken hatching
Update on research and teaching.
Discussion of book on Spemann. Request for information on Spemann's experiments. Comments on manuscript. Personal updates
Arrangements for visit
Handwritten letter, 1 page
Notes on publication.