Ken Jacobs , the pioneering experimental filmmaker noted for incorporating manipulated found footage into a series of films over more than seven decades, died Sunday in Manhattan. He was 92. His son, filmmaker Azazel Jacobs , noted that Ken’s wife Flo Jacobs had died on June 4: “While the official cause of death was from kidney failure, life without his collaborator and partner since 1960 was unimaginable for so many, especially him. “He worked on his art every day, completing some final ‘