Viking I is a 10-book series with 10 primary works first released in 1994 with contributions by Sandra Hill.
1994 • 2 Readers • 448 pages • 4
1995 • 4 Readers • 432 pages • 3
1995 • 2 Readers • 390 pages
1999 • 2 Readers • 404 pages
2001 • 2 Readers • 4
2002 • 2 Readers • 3
2004 • 3 Readers • 357 pages
2010 • 1 Reader
2012 • 1 Reader • 187 pages
2013 • 2 Readers