Commercial sites offer hundreds of thousands of contemporary and archival photos and footage for sale, though users may search and view watermarked images online.
These national digital libraries and major digital research collections include thousands of high quality images of original materials in all formats on a wide variety of subjects.
The DPLA brings together the collections of diverse public institutions experiences into "a single platform and portal, providing open and coherent access to our society’s digitized cultural heritage." Includes books, images, historic records, and audiovisual materials
Convenient integrated access to Creative Commons licensed content (images, media, music) provided by search engines and organizations such as Flickr, YouTube, Wikimedia, Google Images, Pixabay, and others.