From the category archives:

Norton, Andre

Time agents Gordon Ashe and Ross Murdoch are again on the hunt for alien artifacts, this time on a world where most of the surface is water. Traveling to the planet’s past, they find themselves caught in struggle between rival cultures waged with a mixture of technology and magic, and behind it all are the alien spacemen that have been their foes since the beginning.

In this continuation of Andre Norton’s Time Trader series, a spaceship carrying modern day Apaches is sent in an attempt to colonize one of the worlds revealed by the time agents. But when the ship crashes, the colonists find they must fight not only a hostile world, but also their cold war enemies, for survival on their new home.

Cold War opponents battle for the possession of the artifacts of an alien space faring race in a search across prehistoric Europe. In the first book of one of Norton’s best known series, agents from the modern world disguise themselves as bronze age traders to discover the source of technological secrets suddenly appearing in the arsenals of the Eastern powers. What they find is the remnants of an alien civilization that spanned the galaxy.