The 81 year old director/producer died of natural causes at his Beverly Hills home last week (14Aug14).
Landsburg also executive produced Tv films The Ryan White Story and The Jayne Mansfield Story, which featured Loni Anderson as the actress and a young Arnold Schwarzenegger as her husband, Mickey Hargitay, and produced sequels Porky's Ii: The Next Day and Jaws 3-D.
He directed several episodes of 1960s documentary series Biography, hosted by Mike Wallace, as well as National Geographic specials and The Undersea World of Jacques Cousteau adventure series.
Nominated for an Emmy five times, he won the prize as a producer on the 1970 Hallmark Hall of Fame film A Storm in Summer, which was written by The Twilight Zone creator Rod Serling. Landsburg was also nominated for a Best Documentary Oscar in 1972 for Alaska Wilderness Lake.