The King James Version Old Testament Hebrew Lexicon is Brown, Driver, Briggs, Gesenius Lexicon; which is keyed to the "Theological Word Book of the Old Testament." These files are public domain.
The New American Standard Old Testament Hebrew Lexicon is Brown, Driver, Briggs, Gesenius Lexicon; which is keyed to the "Theological Word Book of the Old Testament." These files are public domain.