https://ocw.mit.edu/ans7870/21f/21f.027/home/vis_menu.html
I liked learning about this website specially designed for scholars, teachers, and other professionals. I use a lot of visuals in my classroom and while I may not teach all lessons or units posted, I will definitely use many of the images. I like the painting of Commodore Perry's ship as I am designing a lesson around this historical event.
This website, recommended by Prof. Dube, was created by Prof. John Dower of MIT. It includes a huge archive of unique images, maps, pictures, and paintings.