Letter from John D. Rockefeller 3rd to John D. Rockefeller, Jr..
Rockefeller, John D. 3rd
Rockefeller Archive Center, Office of the Messrs. Rockefeller records, series O, box 1, folder 1
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New York (N.Y.) New York
Rockefeller, John D. 3rd, “RE: Birth Control,” 100 Years: The Rockefeller Foundation, accessed May 23, 2017, http://rockefeller100.org/items/show/2564.