More like Three Go Back

anchored on:science fictionprehistorictime travelour worldadventurous

but

Narrow

The Dancer from AtlantisNovel
Poul Andersonstandalone novel1971
Set in ancient world and mediterranean.
The Goblin ReservationNovel
Clifford D. Simakstandalone novel1968
Fantasy, whimsical in tone, about aliens.
The Corridors of TimeNovel
Poul Andersonstandalone novel1965
Science fiction and time travel, adventurous in tone, set in our world.
Mists of DawnNovel
Chad Oliverstandalone novel1952
About coming of age.
D. O. D. O. (Department of Diachronic Operations)Series
series2 books2017
Historical fantasy, about political intrigue, set in europe.
“The young man from a shadowy government entity approaches Mel, a low-level faculty member, with an incredible offer.”
from the catalogue
Start with The Rise and Fall of D. O. D. O. →
RoadmarksNovel
Roger Zelaznystandalone novel1979
Science fantasy, about dragons.