The Micropolitan Museum contains images of microscopic art forms, photographed with an old Zeiss photo-microscope on slide film.
Simone and Martin's site, focusing on wedding photography, features beautiful flash transitions from thumbnail to enlargement.
Making the most out of the Polaroid SX-70.
photoLondon showcases London's libraries and museums with collections of historic photographs of the city.
Two interesting exhibits on Vintage Works: Early Images of the Orient and The Paper Negative.