1632 Universe/Ring of Fire

1632 Universe/Ring of Fire is a 30-book series with 30 released primary works first released in 2000 with contributions by Eric Flint, David Weber, Virginia DeMarce, Andrew Dennis, Charles E. Gannon, Anette Pedersen, Gorg Huff, Paula Goodlett, David Carrico, Kerryn Offord, Rick Boatright, Griffin Barber, Iver P. Cooper, Walter H. Hunt, and Robert E. Waters.