Henry Dearborn, 100, a retired Foreign Service officer who served in Latin America, died April 9 at the Collington Life Care community in Mitchellville.

He had heart disease, his son, Henry M. Dearborn, said.

Mr. Dearborn came to Washington in 1939 to work in the Washington office of the Foreign Policy Association. He joined the State Department in 1941.

He had international postings in Colombia, Ecuador, Peru and Mexico. He was on assignment to the Dominican Republic in 1960, when the United States cut off diplomatic relations with the Caribbean country. Mr. Dearborn stayed on as consul general and was present when Dominican leader Rafael Trujillo was assassinated in 1961.

Mr. Dearborn retired from the Foreign Service in 1970. In 1975, he testified before a Senate committee on possible U.S. involvement in international assassinations.

Henry Mark Valpey Dearborn was born in Lawrence, Mass., and was a 1936 history graduate of Dartmouth College, where he was a member of the Kappa Sigma fraternity. He received a master’s degree in history from Yale University in 1939. He also studied at the National War College in the late 1950s.

He was a member of the American Foreign Service Association, DACOR (Diplomatic and Consular Officers Retired) and the Dartmouth and Yale clubs of Washington.

His wife of 49 years, Maria Rosa Pareja Dearborn, died in 1995. Survivors include two children, Pamela D. Hartigan of Vovray-en-Bornes, France, and Henry M. Dearborn of Fairfield, Iowa; four grandchildren; and two great-grandsons.

— Matt Schudel