Here is an unusual early trade card illustrated by Wizard of Oz book illustrator W W Denslow. It pictures a boy (or girl?) riding a giant fly or wasp. Usually these advertise a company on the back but this one is blank, so possibly a proof card. One of a set of four by Denslow, three of which I’m listing today (see Spring 2015 Baum Bugle p. 50), with the overlapping B&H mark of Baker & Hayes used on others of his cards. Original vintage card, ca. 1884.
Card is in very good condition, with one corner fold and looks to have been removed from an album on the back.
Please check out the “Oz Illustrators” section in my Ebay store for other unusual Denslow items.