Not an official site, but this Flickr user has collected together a display of photographs that have won the Pulitzer Prize. Easier to browse then the official Pulitzer Prize website, but less information--so check both.
Digital image library offering searchable collections of images and descriptive information including architecture, painting, sculpture, photography, and more, encompassing many time periods and world cultures. Note: First time, off-campus users accessing via OpenAthens will be required to create a personal account
Browse the Stacks!
A great way to find an iconic photograph is to browse the stacks. Most photojournalism books are located in Rose Library.
TR624-835 Applied photography (Including artistic, commercial, medical photography, photocopying processes)