Historical medicine and health images - there's some fun browsing for aficionados of antique medical technologies, such as orthapedic devices, anatomical illustrations and models, public health materials, and much more. Each image can be enlarged and has explanatory text. (Just a small part of the 30,000+ image database of the wonderful site ingenious, previously brought to our attention by Fat Buddha.)
Posters American Style - patriotic posters, posters that preach, commercial posters, events posters, etc.
gigposters -- a collection of posters created by artists and musicians to advertise their shows and events.
These Posters were an Artbomb that went off across the street from my apartment last night. The posters were plastered over a bus shelter ad and over several other public objects nearby. I was taken aback, as I had last seen those images hanging in an exhibit at the San Jose Museum of Art. San Jose has a fairly bad graffiti/tagging problem, but I'm OK with this type of thing. Apparently, the SJPD are too (quoted from the Mercury News): "The poster-pasting could be considered a violation of municipal statutes on vandalism, but San Jose Police Department spokesman Steve Dickson seemed more amused than concerned. "It's not something that we would get involved in unless someone makes a complaint," Dickson said. "Then we'd ask them to take them down. People have a right to political speech." In fact, Dickson broke into laughter at a description of the two posters. "Hey," he said apologetically, "we have a sense of humor like anyone else."