Mad scientist Don Sindulfo and his best friend Benjamin take off in Sindulfo’s flying time machine along with Sindulfo’s niece, her maid, a troop of Spanish soldiers, and a bordelloful of French strumpets for madcap adventures at the 1860 Battle of Téouan, Queen Isabella’s Spain, nondescript locales in the eleventh and seventh centuries, 3rd-century China, the eruption of Mt. Vesuvius, and a biblical time shortly after the flood.

After taking a year of Spanish at the University of Colorado, I undertook a three-year project of translating Gaspar’s novel to English, which is available in a pdf file for your reading pleasure. Even with the unpleasant twist at the end, it was still a fine, farcical romp through history.

We've got the evil Professor Tode (who modifies an atom-smasher into a time machine that travels to the Palaeolithic and to Atlantis), a fatherly older professor, his beautiful young daughter (menaced by evil Tode), casually written racist pronouncements (by Rousseau), and our hero scientist, the dashing Jim Dent. But my favorite sentence was the brief description of quantum mechanics, which I didn’t expect in a 1930 science fiction tale.

Evil Daniel kidnaps Ellen and takes her to the year 1,000,000 A.D. via metabolic speed-up! Not to worry. Good and compassionate Webster follows via relativistic time dilation!

In order to save the world, wealthy young Houghton travels back fifty years to set straight his great-uncle’s world-threatening mistakes, but it’s Alison—Houghton’s fiery tempered cousin-once-removed—who has a more genuine interest in saving the future than her father does.

Charlton’s first issue of Space Adventures introduced Hap Holliday, the Time Skipper, who travels with Professor Eon Tempus to the far future to rescue Ula, queen of Futuropolis, from reptile people. The end of this installment assures us that we’ll learn more of Ula in the next issue, but alas, the second and final adventure of the Time Skipper was delayed until Space Adventures #3.

At the end of the Time Skipper’s first adventure, Hap Holliday and the professor were hoping to convince Queen Ula to accompany them back to the past, and it seems they succeeded, since Ula is with them on the splash page. But in their return trip (via the ever-staunch Timejumper), they overshoot their mark and end up in ancient Rome where the trio meets Cleopatra and tries to save Caesar.

First the Soviets and the Westerners fought. Then the Westerners brought Schonerman’s killer robots into the mix. Then the robots fought both human sides. You know all that from Dick’s earlier story, “Second Variety.” But now it’s long after the desolation, long enough that Caleb Ryan and his financial backer Kastner are willing to bring back the secret of Schonerman’s robots from the past to make their world a better place for surviving mankind, including Ryan’s visionary son Jon.

Businessman Burt Carpe and his scientist sidekick Jeff struggle with coming up with a plan to make money from their time machine. In the end, they take a large lump of carbon back to an unspecified ice age a few million years in the past. Can you guess why?

The title suggests that Professor Amos Shute’s intrepid travelers are going back in time to four planets that are identical in every way to our own, but then again, perhaps those four planets were merely at earlier times to begin with. We won’t say one way or another, but we are glad that the Spanish Flu pandemic, World War I, World War II, and World War III were all averted on some Earth.

I’d bet my last złotych that Lem is carefully satirizing the rule of the Polish United Workers’s Party in this story of a fourth-millennium man who hails from Mars and has room in his brain for two or three different personalities (Kazimierz Nowak, Hipperkorn, and possibly a dreaded Nanów), the first of which leapt from a touring chronobus in the 20th century where he hoped to find the inventor of time travel, Professor Tarantoga.

The writer, David L. Hewitt, took chunks of plot and script from The Time Travelers (1964), swapped the blonde for a brunette, swapped the accidental time gate for an accidental time rift that drags the whole lab through time as if it were a time ship, added a anachronistic dinosaur, and ended up with an unwatchable movie.

Like the 1964 version, this version has a brief mention that it’s impossible to change events that have already happened, but unlike the original, the montage at the end of the film is mere chaos that no longer reinforces the idea of a single deterministic, nonbranching timeline. Despite that, I enjoyed the consequences of the villainous character running into himself, but at the same time, I dismayed at the discussion of how meeting yourself could instantly cause a disastrous explosion or implosion or maybe something-or-other (the audio was unintelligible at 1:12) would cease to exist. (I pray that the space-time continuum wasn’t in peril).

After the Scarlet Centurion waylays the Avengers on their way back from the 1940s, they find themselves in an alternative 1968 where the five original Avengers stayed together under the thumb of the Scarlet Centurion.

The story includes flashbacks and previously unknown explanations of the team’s previous trip to the ’40s in Avengers #56, and at the end of the story, Goliath uses Dr. Doom’s Time Platform to banish the Scarlet Centurion back to his time—and we think this is the only time travel that actually appears in the story (apart from the flashbacks). We don’t know what happens to the alternative 1968 (now known as Earth-689, but the traveling Avengers return to the universe that we all knew and loved in the 1960s (a.k.a. Earth-616), with their memory of the whole affair wiped by the Watcher.

After waking an Egyptian pharaoh from a millennia-long sleep, Uncle Scrooge summons Donald and Gearloose, eventually realizing that they can restore the pharoah to his rightful throne via a trip to ancient Egypt in Gearloose’s not-quite-finished time machine. That doesn’t go quite as planned, and on the way home, they manage to turn the future into a money-mint-land or somnethin’?.

The 2020 posthumous publication of this 1977 manscript shows us Heinlein’s first forey into the multiperson solipsism of semi-mad scientist Jake Burroughs, his beautiful daughter Deety, her strong love interest Zeb Carter, Hilda Corners and their time/dimension-traveling ship Gay Deceiver. In all, the earlier manuscript has three adventures that were significantly changed in his eventual 1980 publication of the work, retitled as The Number of the Beast:

1. In Pankera, the Mars Ten actually is Barsoom where the gang meets the Princess of Mars and others, while in Beast, Mars Ten is a relatively boring futuristic British Mars.
2. Pankera has a long adventure in the Lensman universe, while Beast has only a few pages.
3. Pankera’s ending is a 30-page, rushed description of how they plan to launch a major war against the Panki, while Beast’s 130-page ending takes the gang to the universe of Dora and Lazurus Long where they rescue Maureen from the past and are joined by a passel of Heinlein’s characters.

In both books, Gay Deceiver can clearly travel through any one of three time axes at will, although that ability is largely ignored apart from Maureen’s rescue in Beast. Because of this, we had a fierce debate up in the ITTDB Citadel about whether to even include Pankera in the database. In the end, we decided yes, marking it as the parent work of Beast, but on account of no easily recognizable time travel, we also marked it as having only debatable time travel.

Semi-mad scientist Jake Burroughs, his beautiful daughter Deety, her strong love interest Zeb Carter, Hilda Corners (“Aunt Hilda” if you prefer) and their time/dimension-traveling ship Gay Deceiver yak and smooch their way though many time periods in many universes (including that of Lazurus Long), soon realizing the true nature of the world as pantheistic multiperson solipsism.

In Heinlein’s first version of this novel, written in 1977, the middle third of the story takes place on Barsoom, but in the 1980 published version, Barsoom was replaced by a futuristic British Mars

Professor Noah rescues all the animals from a dying planet, and during their journey of 40 days and 40 nights they plan to travel through a time-zone to take them hundreds of years into the future. At one point, the elephant must take a spacewalk to fix the time-zone guideance fin, which suggests that the time-zone is some sort of a wormhole or other time portal in space rather than mere reletavistic time dilation—and indeed there is actual time travel!

Tasco Magnon, time traveler, decides to take his new bride on his next trip through time—a quest to find the mythical Knot in Time—where the two of them get trapped, and only one can return.

After Smith’s death in 1966, the story was completed by his wife, Genevieve Linebarger, and sold to Harlan Ellison’s The Last Dangerous Vision, but that anthology was endlessly delayed. So in 1987, a translated version of the story was published in a French collection of Smith’s stories, and that was the first published version (although we’ve listed it as an English story, since that’s how it was written). The English version was finally published in Smith’s 1993 complete short science fiction collection by NESFA. By then, Ellison’s rights to the story had expired, although that didn’t stop him from suing NESFA.

In the cartoon version of the short story, Henry imagines that his time machine is an elaborate time ship, at least until his perfect little brother brings him out of his daydream and back to the real world of cardboard.

After Farway Gaius McCarthy fails his final examination at the Central Time Travelers Academy, he puts together a rogue time travel crew to swipe valuable artifacts from the past at moments when they won’t be missed. And it’s all roses until a mysterious girl sidetracks them on the Titanic and steers them into a multiverse of fading timelines.

As you might guess, we enjoyed Far and his friends, but the thing that sealed an Eloi Bronze Medal was the fact that when a particular timeline actually managed to branch (not an easy feat) and the traveler then jumped to the future, she found her another self—the her that was born on that timeline—waiting for her. Most branching timeline stories ignore this issue entirely.

A woman seems to be chasing someone via random jumps through time.

Captain Nova Kester travels back from a devastated future to warn an energy mogel about the impending climate cataclysm, but only young Nas takes her seriously. That happens when time travel causes you to revert to 12 years old.