Correspondence
On Hamburger's review of 'Von Baer: Man of many talents'.
On Martha and Viktor Hamburger's upcoming visit in Baltimore at Willier's house.
Typewritten letter, 1 page
Recommendation for fellowship
On their manuscript. On Martha's upcoming teaching appointment in Elementary Biology at St. Louis University's Night School.
On Holtfreter's immigration status.
On his considerations about a 'truly genetical embryology'. On hiring Takahashi.
Thank you for visit
Handwritten letter, 2 pages
Handwritten letter, 2 pages
Handwritten letter, 2 pages
Typewritten letter, 2 pages