E. R. Braithwaite, a Guyanese author, diplomat and former Royal Air Force pilot whose book “To Sir, With Love,” a memoir of teaching in London’s deprived East End, was adapted into a hit 1967 film starring Sidney Poitier, died on Monday in Rockville, Md. He was 104.
Mr. Braithwaite’s companion, Genevieve Ast, confirmed his death to The Associated Press. He had taught English at Howard University, in Washington, and lived in the area for many years.
Mr. Braithwaite, who became a diplomat and represented Guyana at the United Nations and in Venezuela, wrote several books, many about racism in countries like South Africa and the United States, where he lived much of his life. But he is best known for “To Sir, With Love” (1959).