Laurence Haddon, who appeared onstage and in TV shows including “Mary Hartman, Mary Hartman,” died in May 10, in Santa Monica from complications associated with Lewy Body Disease. He was 90.

Born in Philadelphia, he attended Syracuse U. After Pearl Harbor he left college to train on the Pennsylvania School Ship and then served in the merchant marine during WWII. After the war he did a brief stint in the aluminum business until he decided to become an actor. In New York, he landed numerous parts onstage and in the early era of live TV, and toured with “Tea and Sympathy” and The Warm Peninsula.”

In 1958 he married actress and model Jacqueline Prevost. He continued his career in film and TV in Los Angeles, with feature credits including “The Graduate” and “Fantastic Voyage.”

Haddon had recurring roles on “Dennis the Menace,” “Dallas” (as J.R. ‘s banker), “Knots Landing,” “General Hospital” and most notably,...