Correspondence
References for their chapter in 'Analysis in Development'.
Updates about a recent trip to a meeting on the role of Dobzhansky in the evolutionary synthesis in Soviet Union and teaching courses at Harvard.
Sending a copy of the first edition of 'Analysis of Development'. Probably attached a Price Scale for reprints.
On governmental regulation that make it impossible to visit Hamburger in the US.
On Hamburger's upcoming visit at McGill.
On reading Thoreau's "Walden". On the ph stability of different structures.
Requesting information about the Growth Meeting and Hamburger's experiences in Woods Hole.
Post-World War II letter telling Hamburger about some experiences in Germany
On teaching undergraduates. On prospective successors of Curt Stern.
On his upcoming lecture series at Columbia. On getting the permission for visiting the US.
Invitation as a guest lecturer at Hamburger's department at University of Washington.
On the death of Spemann.