An 1873 New York Book Trade Sale
Ian Brabner

Cool item (and I see I missed it on your site, alas). This would have been the waning days of the trade sale, once a major method of distribution in the U.S., but more efficient transportation in the post-Civil War era helped do them in, and the now-more-familiar (fixed-price sales) Book Fair concept would rise in the U.S. a few years after this. At this point, the trade sale auctions were largely to move what we would now think of as remainders.