Leonard Stogel ( September 23 , 1934 - May 25 , 1979 ) was a music business manager/promoter/producer / executive for music festivals California Jam , California Jam II , and Canada Jam . He also managed Sweathog , The Cowsills , Sam the Sham , Tommy James & The Shondells , Redbone , Gentle Giant , Napoleon XIV , The Royal Guardsmen , and other musical groups . He died when American Airlines Flight 191 crashed on May 25 , 1979 . Coincidentally , Stogel 's parents , Julius and Doris ( Eisenberg ) Stogel , had earlier perished on American Airlines Flight 1 on March 1 , 1962
American Airlines Flight 191
American Airlines Flight 191
Leonard Stogel