When Barry Allen was a child, Nora was murdered and Henry was convicted of the crime. This incident drove his son to become a policeman, in hope of finding the real killer.
Henry died in prison a year or two before his son became the Flash.
- The Flash: Rebirth series introduced a major retcon to the story of Henry Allen. See Henry Allen (Earth-One) for his history prior to this retcon.
- 5 Appearances of Henry Allen (New Earth)
- 1 Images featuring Henry Allen (New Earth)
- Quotations by or about Henry Allen (New Earth)
- Character Gallery: Henry Allen (New Earth)
- Henry Allen at dccomics.com
- Henry Allen at Wikipedia.org
- The Allens at Flash: Those Who Ride the Lightning