Originaly produced by Orville J. Nave, A.M., D.D., LL.D. when a Chaplin in the United States Army. They 'were originally published in the early 1900's, and consists of 20,000+ topics and subtopics, and 100,000 references to the Scriptures.' Click on Bible Study Tool-Concordances. (Copyright 2006 by Librarians' Internet Index)