Caption: "Ing. Ventura Matte inoculating hormones in pine trees." RF photo #24796D.
Rockefeller Archive Center, Rockefeller Foundation records, photographs, series 309, box 70, folder 1530
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Maipu (Chile) Chile
MacLellan, Neil, “La Rinconada, Maipu,” 100 Years: The Rockefeller Foundation, accessed May 24, 2017, http://rockefeller100.org/items/show/2762.