Lake Vision - Collection of web cams and other near-real-time images of the Great Lakes and nearby waters, viewed from various onshore locations. - http://www.lakevision.com/
Visualizing the Great Lakes - Collections of photographs and a few maps of the lakes, including water, fish and other biota, fishing, shipping, industry, pollution, farming, scenery, and recreation. - http://www.epa.gov/glnpo/visual.html
Maps and GIS of the Great Lakes Region - Online resource for a large collection of images and digital data. Maintained by Great Lakes Information Network. - http://www.great-lakes.net/gis/