Where does the material in WBSA come from?
WBSA is based on The New Nave’s Topical Bible, a revision of the classic reference work, Nave’s Topical Bible, which was written in the later part of the 19th century by Dr. Orville Nave. The original Nave’s was revised and expanded by James Swanson; the resulting New Nave’s Topical Bible is Copyright 1997 Logos Research Systems, Inc.