Lord has compiled the most information in the most convenient format but I refuse to give him any money.
All discographies have errors but the others have original errors. Previous editors like Rust, Jepsen, Rabin and Bruyninckx have invested many years and thousands of hours (read money) providing this information. Those guys stood on the shoulders of earlier researchers.
From my experience, Lord has taken their work without as much as a "thank you" and gone into business. I once complained online about Lord errors for sessions I produced. Lord contacted me and bitched about my posting. I pointed out all he had to do was contact me for complete details and he said he never contacted labels because they never cooperated. If he never contacted labels, where did he get his information?
I have provided details to discographers for about 40 years, starting with Francois Postif in 1969. In print format a number of the above mentioned discographers have thanked various "vault custodians" at the major labels and their predecessors.
I'm sure Lord will win.
Correction, he already has.