A while back, I purchased a couple of later edition Putnam books still in their original shipping cartons. They were apparently sold as part of the People's Book Club. (I'm assuming they were sold that way, as the books fit perfectly in the cartons, and they are still crispy fresh as if they've only rarely been taken out of the carton) Nothing about the books indicates they were "book club editions"; that is, there is no blindstamp, no book club printing indication, and the books are the same size as other printings.