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Typewritten letter, 2 pages, signed 'Wally'
Typewritten letter, 1 page, signed 'Wally'
Luftpostleichtbrief (german Air Mail letter) to Martha and Viktor Hamburger with a postmark the day after the letter (September 12, 1953)
Luftpostleichtbrief (german Air Mail letter) letter to Martha and Viktor Hamburger with a postmark on October 10, 1949
Handwritten letter, 1 page, envelope included
Handwritten letter
Typewritten letter, 2 pages, signed 'Wally'
Typewritten letter, 1 page, signed 'Wally'
Typewritten letter, 1 page
On the effects of the nerval system on limb development. Has remarks on important references for Wenger's research.
On Willier's summer plans reagrding Woods Hole.
Travel arrangements for Willier's visit at St. Louis.