Robert Wagner is an interesting publisher. Specialty publications usually passenger cars and the like. Maybe a press run of 1,000.
I was dealing with him thirty-some years ago. That was when I was running the Orange Empire store. Wagner would call me (and others) up after the phone rates went down for the night back in New York and offer any new books and ask which of his books the store needed to restock.
Copies of the book might be in retail stores even though he has sold his stock.
Brian Norden