Comic Title: Superman's Pal, Jimmy Olsen #101
Publisher: DC (National Periodical Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: April 1967
On Sale Date: February 28, 1967 Newsstand Date February 28, 1967
Source: Direct Currents, Superboy #137, Page 29

Copyright Date February 28, 1967
Source: Library of Congress, Periodicals 1967

Frequency: Monthly, with the exception of February, May and November
Cover Price: $0.12
Page Count: 32
Editor: Mort Weisinger

Title: "Olsen's Time-Trip to Save Krypton"
Pages: 24

Feature(s):
Jimmy Olsen (of Earth-1)

Writer: Robert Bernstein
Artist: Peter Costanza

Reprinted In:
Best of DC #46 (1984)

Feature Character(s)

• Jimmy Olsen (last appearance in Superman's Girl Friend, Lois Lane #73; next appearance in Superman #196)

Supporting Character(s)

• Superman (last appearance in Action Comics #349; next appearance in Justice League of America #53)
• Perry White (last appearance in Action Comics #349; next appearance in Superman #196)
• Lucy Lane (last appearance in Superman's Pal, Jimmy Olsen #100; next appearance in Superman's Girl Friend, Lois Lane #75)

Villain(s)

• Jax-Ur (last appearance in Action Comics #336; next appearance in Action Comics #352)
• Professor Vakox (spelled Varox in this story; last appearance in Action Comics #341; next appearance in Action Comics #352)

Guest Appearance(s)

• Supergirl (last appearance in Action Comics #349; next appearance in Action Comics #350)
• Krypto (last appearance in Action Comics #349; next appearance in Superman's Pal, Jimmy Olsen #107)
• Jor-El (on Krypton before its destruction; last appearance in Superman #205; next appearance in Adventure Comics #210)
• Lara (on Krypton before its destruction; last appearance in More Fun Comics #101; next appearance in Adventure Comics #210)
• Kal-El (as a baby on Krypton; last appearance in World's Finest Comics #65; next appearance in Adventure Comics #210)

Other Character(s)

• Dr. Zak-Lor and Miri (a Kryptonian scientist and his daughter; no further appearances)
• Various Kandorians (no further appearances)
• Various Kryptonians (no further appearances)
• Members of the Science Council (no further appearances)

Flashback Appearance(s)

• Jax-Ur (on Krypton before its destruction; last appearance in Superboy #104; next appearance in Adventure Comics #289)
• Professor Vakox (on Krypton before its destruction; last appearance in Superboy #104; next appearance in Superboy #117)
• Krypto (on Krypton before its destruction; last appearance in Superboy #130; next appearance in Adventure Comics #210)

Cameo Appearance(s)

• Brainiac (behind-the-scenes during the theft of Kandor)

Synopsis:
Jimmy is invited to Superman's Fortress of Solitude to witness ceremonies in Kandor and on an artifial Krypton that honor the memory of Superman's home planet. Inspired to stop the tragic events from happening, Jimmy decides to go back in time and stop the destruction of Krypton. The Phantom Zone criminals, Jax-Ur and Vakox, witness Jimmy's preparations. They assist him with his time machine and plant a post-hypnotic suggestion in his mind.

Jimmy's time machine works and he arrives just as Kandor is being stolen by Brainiac. Despite his warning, authorities are unable to stop Brainiac from making the theft. Jimmy then jumps forward in time slightly to meet with the Science Council.

When he sees that Jor-El's pleas are unable to convince the Council, he decides to wait a few days before making his own warning. Jimmy then pretends to be an amnesia victim and befriends Dr. Zak-Lor and his daughter Miri.

Jimmy uses his knowledge of Krypton's future to make predictions that come true. However, his warning is still ignored. Then the hypnotic suggestion kicks in, and he is forced to release Jax-Ur and Vakox from the Phantom Zone.

Despite all his efforts Jimmy fails to stop Krypton's doom. He returns to his own time and gives up his desire to change history. As for the Phantom Zone criminals, they were forced back into the Zone when Krypton's destruction causes a time-warp implosion.