Artstor, the premier image database, is merging content with JSTOR. Presently, you use JSTOR to search for images and text at the same time. The millions of images that were previously only available through Artstor are now available on the JSTOR search platform. To learn about the JSTOR image experience, see the how-to guide here: https://guides.jstor.org/how-to-jstor/images
For a list of other databases that include images, you can filter the Databases by "type": https://library.hunter.cuny.edu/databases/type/8
Listed at that link are two freely available search tools, Europeana and the Digital Public Library of America, which search across European and American digital collections from libraries, museums, and archives. New content is added regularly.