Inventor Leo Thrasher, perhaps the last modern-day Renaissance man, builds a machine to throw him back to Renaissance Italy, where he plans to leave his mark as a painter. Once there, he’s taken under the wing of Guaracco who views him as a potential rival, but still sees a use for the time traveler. When Leo’s memory of future wonders begins to fade, Guaracco pulls 20th-century memories from Leo’s subconscious via hypnotic interviews, somehow even managing to pull out (among other more mundane things) a working pair of wings for Leo to fly over 15th-century Florence.

Demoisell Anne Poins Genelle visits Nostradamus and witnesses one of his visions—children climbing into a series of long, wheeled structures with glass windows—and she promptly steps into the vision.

I enjoyed how he wrote out his visions in quatrains.

Wellman’s tall-tales character of John the Balladeer has a conversation with an old man who came from forty years in the future to stop a terrible war.