Correspondence
On the publication of Hamburger's historical account of Spemann in the November issue of "Experientia".
On the modalities for Holtfreter's upcoming talk at Hamburger's department.
On his recent visits at Harvard, MIT, and other scientific institutions.
Season's greetings
Private letter
Discussion on offer to Mr. Preer
Comments on Holtfreter's proposal for the Academy meeting. On Haddow's article on "Mechanisms of Carcenogenesis" (1953).
Thank you note for a shipment of torosus eggs for a class in experimnental embryology. Talks about his plans for visiting Woods Hole.
Update on career
Comments on Dian Henshel
Invitation to lecture at the Growth Symposium in August 1951 at Wellesley College. On their book manuscript. Invitation for x-mas.