From Carthage to Chicago, this fascinating digital collection from the University of Wisconsin-Milwaukee presents quite a cornucopia of photographic images drawn from the world's cities, past and present. The images are from the American Geographic Society Library, and just two photographers, Harrison Forman and the noted urban geographer, Harold Mayer, took the pictures. All told, there are over 5500 photographic images in this collection, and first-time visitors should read over the brief introductory essays on the scope and content of this project before jumping into the materials. By clicking on the "Cities" section, visitors can browse around the cities with the most photographs, and then they may also wish to perform a detailed search. There are some fun surprises here, including an aerial view of the Union Stock Yards in Chicago and the governor's residence in Dar es Salaam.