Remember sitting in a dark lecture hall with the sound of the slide projector advancing from art of the ancient near east through the renaissance? Well, I do and I know this is not how art history is taught presently. The resource of resources seems to be Scholars Resource “the only marketplace where educational institutions can license digital images in perpetuity from multiple sources.”
This resource is remarkable for a number of reasons. Users can search by textbook, time period, artist or museum. Anyone can view the vast selection, but you need an account to download images or order products.
Since the works of art feature many searchable attributes, this site seems to provide a fine starting point for anyone interested in art history research, scholar or otherwise. And, if you do need a nice selection of “slides” this is the place to find it all.