Abstract
The study analyses scientific knowledge circulation between Brazil and the United States, drawing on Rockefeller Foundation's funding to Escola Paulista de Medicina to modernize medical training. The chosen initial chronological landmark is 1956, when the foundation started funding the Brazilian institution, and the final year is 1962, deadline for spending the grants. The study's sources are dossiers collected at Rockefeller Archive Center, analyzed drawing on the evidential paradigm. The conclusion is that when the philanthropic agency decided to finance the school, the latter was already part of an international network of knowledge circulation, and its medical training modernization comprised investments in basic sciences, clinical practice, and the defense of full-time departments.