Download Action Comics #255
- Script: Otto Binder
- Pencils and inks: Jim Mooney
- Synopsis: Supergirl travels into the future for the first time and meets young Tommy Tomorrow.
- in Superman Family (DC, 1974 series) #179 (October 1976)
- in Supergirl Archives (DC, 2001 series) #1
- in Showcase Presents: Supergirl (DC, 2007 series) #1