SDA Bible Dictionary -$90 - Supplementary info. concerning individuals, countries, objects and concepts in the Bible.

Strong’s Handy-size Exhaustive Concordance -$25 page size reduced

Strong’s Exhaustive Concordance -$25 With Hebrew and Greek Dictionaries
Strong's Concise Concordance $12 - English words only

Treasury of Scripture Knowledge R A Torres $ 25  Cross-references for almost all bible texts (over 500,000 entries).