The short answer is "No"
For LGB items until 1997 the Roth & Doggett "Official Guide to LGB" is an excellent reference book but there are some LGB items missing and some errors in that book.
The Greenberg catalogs are basicaly abbreviated versions of that book so they don't add anything new.
Christmann came out with his latest version in 2002 - so it covers a longer time period that Roth & Doggett, but Christmann has even more items missing and only covers rolling stock.
LGB had a database of just the more recent items on line but that was taken down - it wasn't complete either.
About two years ago another database was started which is intended to cover all of Large Scale rolling Stock eventually - it has a good selection of LGB in it now.
Is there anything specific you're looking for?