John W.F. Dulles, professor of Latin American studies at the University of Texas and the eldest son of the former secretary of state, died June 23. He was 95.

Dulles was preparing for the fall semester when he died, school officials said. His wife of 68 years, Eleanor Ritter Dulles, died four days before he did.

A noted scholar of Brazilian history, Dulles taught at Texas for 45 years. His father, John Foster Dulles, served as Secretary of State from 1953-1959 under President Eisenhower.

Dulles wrote 12 books on the political history of Brazil during the 20th century and studied Mexico.

Born in Auburn, N.Y. in 1913, Dulles earned a bachelor's degree from Princeton, a master's degree from Harvard and a bachelor of science in metallurgical engineering from the University of Arizona.

His most recent publication, "Resisting Brazil's Military Regime: An Account of the Battles of Sobral Pinto," was published in 2007.