Correspondence
On the second edition of St. Vincent School.
On Robert Barden and his work on the origin and development of the iris pigment.
Thank you letter for information regarding Anne Bekoff's professional qualifications
Typewritten letter
Twitty is requesting a letter of recommendation for Dr. Sperry.
On Hamburger's historical account of Spemann's work style in the November issue of "Experientia".
On keeping a frog colony in his Rochester lab. On frog development. Critical remarks on Locke's editorial work.
questions about the history of behavioral embryology
On the Institut D'Anatomie in Lausanne
Handwritten letter, 8 pages
Florence Moog write to Liselotte Freed at the behest of Hamburger, to send her a review of her manuscript
Typewritten letter, 1 page