Aviation
Aviation Pictures - http://www.aviationpictures.com/
Features stunning and evocative images of aircraft and air sports, clouds and skyscapes, the environment, aerial views, airports and architecture, travel and general photography.
Old Dominion Squadron - http://www.olddominionsquadron.org/
Participates in static and flying air shows in the eastern US, particularly in Virginia, Maryland, and North Carolina.
Planepictures.net - http://planepictures.net/
Browse or research free of charge in one of the largest aviation picture databases worldwide.