ג'ק דמפסי (Hebrew Wikipedia)

"Georges Carpentier, Boxer, Dies in Paris; He Fought Dempsey at Boyle's Thirty Acres in 1921" New York Times. October 29, 1975, Wednesday. "Georges Carpentier, who lost on a fourth-round knockout to Jack Dempsey in boxing's first $1-million gate, died last night of a heart attack. He was 81 years old."
The Lawless Decade By Paul Sann

nytimes.com

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"Dempsey's Brother Slays Wife, Self. John Dempsey Shoots Woman, Then Commits Suicide, at Schenectady. Boxer Identifies Bodies. He Is Deeply Affected by the Tragedy. Couple Had Been Estranged for Year." New York Times. July 3, 1927, Sunday. "Apparently in a spell of temporary insanity due to a recurring attack of an illness to which he had been subject for several years, John Dempsey, brother of the former heavyweight champion, fatally shot his 21-year-old revile, Edna, in a rooming house here today."
"'John the Barber' Fight Mentor, Dead. Jack Dempsey's First Manager Succumbs to an Infection of His Finger. His Wife, Reconciled After Long Separation, Is at Bedside With Their Children." New York Times. September 16, 1930, Tuesday. ""John the Barber," in private life John J. Reisler, known on Broadway for many years as a barber, fight manager and friend of the street's great and near-great, died yesterday..."
"Jack Kearns, Manager of Dempsey, Dies at 80; Earned and Spent a Fortune as Pilot of Six Champions. Associated With Rickard Life Full of Drama Taught Dempsey Left Hook Dempsey Winner in 15." New York Times. July 8, 1963. "Jack Kearns, who managed Jack Dempsey and other boxing champions, died today at the home of his son Jack Kearns Jr. He was 80 years old."
"Tunney, Boxing Champion Who Beat Dempsey, Dies. Lectured on Shakespeare." New York Times. November 8, 1978, Wednesday. "Gene Tunney, the former heavyweight boxing champion who twice defeated Jack Dempsey, died yesterday at the Greenwich Hospital in Connecticut. He was 80 years old and had been suffering from a circulation ailment."

paladin-press.com

How to Fight Tough by Lt. Jack Dempsey

tripod.com

coxscorner.tripod.com

Monte D. Cox, Were Dempsey’s Gloves Loaded? You Decide!

uscg.mil

Coast Guard History Jack Dempsey