HANOVER, N.H., April 17 Maurice Rapf, a screenwriter, a founder of the Writers Guild of America and a professor emeritus of the film studies department at Dartmouth, died on Tuesday. He was 88. Mr. Rapf was the son of Harry Rapf, a pioneering executive at Metro-Goldwyn-Mayer Studios, and he recalled having a brief career as a child actor, portraying orphans, street urchins and assorted brats. "Making movies was the family business, and with parental help it became mine as well," he wrote in 1990 for the Dartmouth alumni magazine. After graduating from Dartmouth in 1935 he returned to Hollywood...