Correspondence
Private letter on Weigold's health condition.
Request for tantalum foil to insert in early chick embryos. On discrepancies in the mecahnism of sensory and motor hypoplasia.
Typewritten letter, 1 page
Apology for earlier letter
Hamburger's permission to publish corespondence between himself and Schmitt written on May 9, 1941
Invitation to lecture at Washington University.
On Mary Rawles and her final manuscript on 'Tract Specificity in Structure of Down Plumage'.
On a draft version of Twitty's paper and Holtfreter's considerations. Enclosed a letter by Holtfreter (November & December 1964) on Twitty"s manuscript.
Thank-you note for a picture.
Private letter. Has message by Gertrud 'Trudl' Wiehen.
Private letter. Mainly on his high age. Has message by Gertrud 'Trudl' Wiehen.
On his plannings to work as an embryologist for the next 10-15 years. On his & Hamburger's efforts to revitalize invertebrate zoology as a research area in Woods Hole: '(...) Surely if M.B.L. does not do this, it will not be done elsewhere for many years after the war. (...)' Discusses the outline of a planned 'guidebook of invertebrate zoology' for the use of students at the MBL and course leaders at the MBL and at universities.