Back to top


Nomination letter as Associate Member of the Society of Zoologists for Walter N. Hess.
Welcomes Harkmark to study in lab
Unable to come to Hamburger's lab this year
Wilhelm Harkmark visiting from October through December 1956
Invitation as a guest lecturer at Hamburger's department at University of Washington.
Letter of recommendation for Watterson for promotion to full professor at Northwestern.
Discussion of upcoming AAAS Meeting at Berkeley and presentation of research on lumbar spinal cord
Invitation to Schleidt to visit, offer to pay expenses
thank you for reprints, discussion of cyclical activity in older chick embyos and cyclical self-generated activity and adult goal-directed behavior