It felt like an elevator ride! 
- — Mark Swift src
Mark Swift was an orphan boy who lived with grade school teacher Rodney Kent, who invented a Time Retarder which he called the "History Express."
History
In 1940, grade school teacher Rodney Kent invented a "Time Retarder" which he dubbed the "History Express," and used as a teaching tool. Accompanied by an orphan boy who lived at his house, young Mark Swift, Kent visited the year 940, and had an educational adventure among the Viking explorers of northern North America, and their indigenous Indian adversaries, at the end of which they returned to 1940.
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Notes
- This version of Mark Swift, including all history and corresponding appearances, was erased from existence following the collapse of the original Multiverse in the 1985–86 Crisis on Infinite Earths event and later restored following the rebirth of the infinite Multiverse during the Dark Crisis of 2022–2023. Even though other versions of the character may have appeared, this information does not apply to those versions.
- The writer and artist of Mark Swift and the Time Retarder are not credited in Slam-Bang Comics #1
Related
- 8 Appearances of Mark Swift (Earth-S)
- 1 Images featuring Mark Swift (Earth-S)
- 1 Quotations by or about Mark Swift (Earth-S)
- Character Gallery: Mark Swift (Earth-S)
Footnotes