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Typewritten letter, 1 page, signed 'Wally'
Handwritten letter to Viktor Hamburger
Plans for visit
Typewritten letter, 1 page
Typewritten letter to Martha and Viktor Hamburger
Invitation to teach in the spring semester. Book updates.
Handwritten letter to Martha Hamburger, 4 pages
Typewritten letter to Martha and Viktor Hamburger
Typewritten letter to Martha and Viktor Hamburger
Luftpostleichtbrief (german Air Mail letter) to Martha and Viktor Hamburger
Hamburger writes to Fujita to thank him for the reprints and ask him to visit his laboratory in St. Louis
Typewritten letter, 1 page, signed 'deine Barbel'