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On induction. On Holtfreter's permission for visiting the US.
Handwritten letter, 6 pages, post script, 2 pages
Letter, 6 pages
Fujita writes to Hamburger to thank him for sending a reprint of his Mangold Organizer paper
Typewritten letter, 1 page
Typewritten letter, 1 page
Typewritten letter, 1 page
Typewritten letter, 1 page
Typewritten letter, 3 pages
Typewritten letter, 1 page
Gerhard Fankhauser writes Hamburger about a letter he received from Victoire Haemmerli-Boveri
Gerhard Fankhauser writes to Hamburger about his personal reminiscences of classic embryologists and asks him for input on Spemann