Review: Curious Notions (Crosstime Traffic series, book 2) by Harry Turtledove. Tor Books. 272 pages. Harry Turtledove is one of my favorite authors, and is considered the father of alternative history. He is a very prolific author, and has several series, all dealing with the what-if of things that could have happened that didn’t. The … More Review: “Curious Notions” by Harry Turtledove