The 1632 series, also known as the 1632-verse or Ring of Fire series, is an alternate history book series and sub-series created, primarily co-written, and coordinated by Eric Flint and published by Baen Books. The series is set in 17th century Europe in which the small fictional town of Grantville, West Virginia, in the year 2000 was sent to the past in central Germany in the year 1631, during the Thirty Years' War.

More information is available at http://en.wikipedia.org/wiki/1632_series