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Correspondence & Documents

Updates about settling at the University of Colorado and work on maize.
Thank you for article. Update on research and teaching.
Request for recommendation for the Guggenheim Memorial Foundation, and discussions about unified mechanisms of several behaviors in chicken hatching
Typewritten letter, 2 pages, with envelope
Letter to Trinkaus thanking him for his suggestion to work in Dr. Wolff's lab in Paris
Luftpostleichtbrief (german Air Mail letter) to Martha and Viktor Hamburger
Handwritten letter to Martha Hamburger, 4 pages