ARTstor collections are comprised of contributions from museums, individual photographers, scholars, special collections at libraries, and photo archives. ARTstor includes many photographic collections, such as 80,000+ images from the Magnum Photos and 16,000+ images from MOMA's Exhibition Installation Photograph Collection among others.
ARTstor's Online Image Viewer (OIV), which can be downloaded from within the ARTstor site, is a good alternative to PowerPoint. It can be used to present ARTstor images; it can also incorporate images from other sources.
Google Images can be an extraordinarily rich source of photographic images. It can be searched by entering text or by clicking the camera icon and dragging an image into the box to search for similar images.
As with all internet searches, be wary of poor quality, inaccuracy, misidentification, and copyright concerns.
VII | www.viiphoto.com
Associated Press | www.ap.org
Blackstar | www.blackstar.com
Contact Press Images | www.contactpressimages.com
Corbis | pro.corbis.com/splash.aspx
Eyepress News Services | www.eyepress.com
The Image Works | www.theimageworks.com
IPNStock (Independent Photography Network) | http://www.ipnstock.com/faq.shtml
Magnum | www.magnumphotos.com
Polaris | www.polarisimages.com
Pressphotos Agency | www.pressphotos.net
Retna | www.retna.com
Reuters Pictures | about.reuters.com/pictures