The papers document activities of Gustavo Gutiérrez y Sánchez, a prominent Cuban exile.  In Cuba (before Castro) he was Secretary of Economy.  He left Cuba in 1959, when Fidel Castro seized power, and went to Argentina, Mexico and finally to Miami where he died in August 1959.  The materials include a typescript of "Exile" with original letters, photographs and documents compiled by Montalvo, a typescript of "Gromyko No Recibio Saludo" ( Un Error de la Associated Press) also compiled by Montalvo,  Official Records of the Third Session of the General Assembly of the United Nations, Part II from 1949, and a pamphlet authored by Montalvo.

The papers reflect professional activities of Agustín Castellanos, one of the most important figures in Cuban and international medicine who was nominated to receive the Nobel Prize in Medicine in 1960.  His contributions to medical science include research in the areas of cardio-vascular diseases, radiology and pediatrics.  The materials consist of correspondence, Curriculum Vitae, medical articles, awards, papers from medical conferences, research papers and reports.