Element Encyclopedia is a 15-book series first released in 2001 with contributions by judika-illes, John Matthews, and 5 others.
2001 • 1 Reader • 704 pages
2008 • 2 Readers • 704 pages • 3
2006 • 1 Reader • 850 pages
2007 • 2 Readers • 569 pages
2005 • 8 Readers • 4
2006 • 1 Reader • 694 pages
2008 • 1 Reader • 558 pages
2005 • 5 Readers • 896 pages
2009 • 1 Reader • 706 pages