Jack Doyle (December 27, 1877 – January 30, 1944) was an American railroad engineer, saloon owner, boxing promoter, and oil-industry investor. In the 1910s he ran what was called the "longest bar in the world" in Vernon, California, United States. He was later instrumental in the creation of both the Vernon Coliseum and the Olympic Auditorium. He retired from fight promotion by 1932 and successfully transitioned to oil drilling at Signal Hill.[1][2][3]
^"United States World War I Draft Registration Cards, 1917-1918", database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:KZVK-2XW : 24 December 2021), John Joseph Doyle, 1917-1918.
^"California, County Birth and Death Records, 1800-1994", , FamilySearch (https://www.familysearch.org/ark:/61903/1:1:QGMK-8KNN : Fri Mar 08 14:49:53 UTC 2024), Entry for John Joseph Doyle and Patrick M Doyle, 30 January 1944.