Presidential interpreter, Department of State (1956-1966).
Oral History Interview (1964): Barnes completed one interview for the John F. Kennedy Library on 6/30/1964 where he discusses meetings between John F. Kennedy (JFK) and Latin American heads of state at which Barnes interpreted, JFK’s relationship with Latin American leaders including Rómulo Betancourt of Venezuela and Arturo Frondizi of Argentina, and his memories of JFK’s assassination, among other issues.