John,

The book in question was published in 2010 and it's about hunting and the Esterhazy Princes. There are a lot of photos and personal belongings of Prince Louis Esterhazy that are shown in the book and from what I have found, they must be stored at Forchtenstein Castle or in the archives of the Esterhazy palace in Eisenstadt. One of our fellow members tried contacting the castle about their holdings by phone, but they weren't interested in helping at all and basically told him that they didn't have anything. This is obviously not the case. They didn't respond to two messages that I sent either. My guess is that they really don't care.

Regards,

Jim