Picturing the Museum: The American Museum of Natural History Photo Collection.
posted on Jun 26, 2008 - View this thread

The non-profit group, Public.resource.org, are challenging the Smithsonian Institution by downloading all 6,288 (mostly) public domain photographs from the very restrictive Smithsonian Images site and reposting them to Flickr. [more: here, here] {via Ramage}
posted on May 18, 2007 - View this thread

The Cliff House was San Francisco Mayor Adolph Sutro's amazing 7-storey Victorian chateau built in 1896 and destroyed by fire in 1907. The Cliff House Project (photos) has a large and absorbing database of related material. [via the indefatigable gmtPlus9 (-15)]
posted on Dec 14, 2006 - View this thread

Heli-Africa - Wildlife photographer Michael Poliza's photo journal from a just completed 2 month helicopter tour from Hamburg to Cape Town. These are a few samples to potentially whet the appetite.
posted on Dec 2, 2006 - View this thread

Some Photographs:
New York club scene in the 70's
Mingle's America in the 80's
NSFW (first link is a biggish load on dialup)
posted on Jun 18, 2005 - View this thread

San Joaquin Valley & Sierra Foothills Photo Heritage

Includes (among other things): portraits, workers, railways, disasters, group shots, parades , native Americans and some curios.
(nearly 3000 images accessible)
posted on Jun 11, 2005 - View this thread