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McClintock's reply to Burnham's letter of January 26, 1931. In it, she conveyed some of her findings on the occurrence of genetic and cytological crossing-over, on which she was then working with Harriet Creighton at Cornell.
Original Repository:
University of Minnesota, University Archives. Charles Burnham Papers
Location:
Box: 3. Folder: 4
Rights:
Reproduced with permission of the University of Minnesota, University Archives. Charles Burnham Papers