Jack Gilbert Graham

John Gilbert "Jack" Graham (January 23, 1932 - January 11, 1957) was an American mass murderer, who on November 1, 1955, killed 44 people aboard United Airlines Flight 629 near Longmont, Colorado using a dynamite time bomb. Graham planted the bomb in his mother's suitcase, who was killed along with 43 other people, in an apparent move to claim US$37,500 (US$335,300 today) worth of life insurance money from policies he purchased in the airport terminal just before the flight departure.

Graham was convicted only of the murder of his mother due to laws at the time, for which he was sentenced to death and was executed by the state of Colorado in 1957.