Although S.M. Stirling’s apparently calling these books (Island in the Sea of Time, Against the Tide of Years, and On the Oceans of Eternity) the Island series. Basic concept: something sends the island of Nantucket back to the Bronze Age. Adventures ensue.
Anyway: I recently replaced my copies of the last two books in the series (they somehow managed to fall into a washing machine), so now I’m rereading them. Good, alt-history/time travel fun.
(Today’s writer: S.M. Stirling)
A lot of people love to hate this particular author – and, given his remarkable lack of suffer-fools-gladly, even by the standards of a genre where it’s practically a prerequisite for writing in it, it’s not entirely surprising – but it still remains true that Stirling’s a crackerjack writer. For this one, I’m just going to toss out a few authors & topics: if you’re already interested in any of them, check out the book associated with it.
That should get you started: fair warning; all of those are alternate history. I’m fond of the genre, you understand.