Letter to Professor Juvenal Dias da Costa Vidalarchival_materialsUnited States. National Archives and Records AdministrationRG84_P75_2AID PARTNERS OF THE ALLIANCE -1966-84P751966-11-18letters (correspondence)engEnglishIndustrial RelationsDiplomatic RelationsBrazil--Rio Grande do Sul (State)Partners of the Alliance ProgramAmerican Consulate, Porto AlegrePhysicsSolar eclipsesThis letter from Robert L. Carmin thanks Professor Vidal for the cooperation he facilitated between American and Brazilian physicists studying a solar eclipse in the area.Carmin, Robert L.AuthorVidal, Juvenal Dias da CostaAddressee