Photographs published on Flickr from the National Archives in the UK. These images come from the Colonial Office 1069 series.
http://www.flickr.com/photos/nationalarchives/collections/72157632012277853
This is site from the National Archives of Australia about post-war migration to Australia. You are invited to register and share your stories or tag and make comments about the photographs.
https://www.destinationaustralia.gov.au/site/index.php
This site has a collection of historic photographs submitted by users around the world with the stories behind them. Old photographs can also be viewed overlaid on Streetview so you can compare the old with the new.
http://www.historypin.com
View photographs, maps, objects and artworks held at various archives, libraries and museums around Australia including State Libraries, the Australian War Memorial, the National Trust etc. Search under keyword for people, places, ships and more. Also included in the database are Flickr images submitted by the public.
http://www.pictureaustralia.org