The first issue in the comicbook mini-series Krypton Chronicles from 1981. In this issue, Superman and Supergirl travel to Kandor (an inhabitable planet that Superman found, in an earlier story, orbiting a red sun where he was able to enlarge the bottled city) and meet with scientists and scholars to help Kal-El in his quest to learn about his ancestors on Krypton.
The writer of this mini-series, E. Nelson Bridwell, created a comprehensive and very intriguing backstory to the El family. The cover art was done by Rich Buckler and Dick Giordano. The interior pencils were done by Curt Swan and inked by Frank Chiaramonte.