It is a wonderful catalog that lists of the European board games. BGG offered it as a free download a few days ago but I would rather purchase a published hard copy.
I'd never heard of this until now, but it definitely sounded intriguing so I had to look it up and WOW! this looks amazing, so glad you asked so I could discover this http://www.spielemuseum.at/gamescompanion/... unfortunately though as far as a hard copy goes they say they were only available directly at Essen so I guess the pdf will have to do? I'm thinking I may just print it out myself.