Sites for a rainy day

Here are the links to the treasure trove that I came across in the recent issue of BBC's Knowledge:

http://www.old-picture.com/crimean-war-index-001.htm
http://inadiscover.com/
http://bbc.in/sdacollection
http://archive.cyark.org
http://arkive.org
http://Mariuscoetzeeafricanphotography.blogspot.com/
http://oryxphotography.com/