The top twenty 1960s motown albums on billboard

From research I did in the 90s

1. TEMPTATIONS GREATEST HITS
2. DIANA ROSS & SUPREMES GREATEST HITS
3. WHERE DID OUR LOVE GO
4. FOUR TOPS GREATEST HITS
5. GET READY [[RARE EARTH)
6. THE SUPREMES A' GO-GO
7. THE SUPREMES AT THE COPA
8. CLOUD 9
9. FOUR TOPS LIVE
10. GOING TO A GO-GO
11. MORE HITS BY THE SUPREMES
12. I HEAR A SYMPHONY
13. TEMPTIN' TEMPTATIONS
14. REACH OUT
15. TEMPTATIONS IN A MELLOW MOOD
16. PUZZLE PEOPLE
17. TEMPTATIONS LIVE
18. SMOKEY & MIRACLES GH VOL. 2
19. TCB
20. GETTIN' READY [[TEMPTATIONS)

What was the database you used for your research please?