Where to find good cheap images

I posted a question a while back as I was using the ultra-cheap Fotolia as a stock photo source but noticed how limited - and American - its model range was.

Thanks to Jean Thornhill for this great list of alternatives:

• http://www.flickr.com/creativecommons ... - If the project is non-profit making and I'm non-profit making then non-commercial use is acceptable.
• http://gallery.hd.org
• http://everystockphoto.com ...
• http://www.freerangestock.com ...
• http://www.morguefile.com
• http://www.geograph.org.uk ...
• http://www.imageafter.com
• http://www.usa.gov/Topics/Graphics.shtml ... - a list of US government photo libraries. I haven't found a British equivalent to this yet.
• And, since the creative commons communities allow us access to free images, I use my own site to give back: http://www.amgine.org.uk/galleries ...

One note from me was:

Here's a local enthusiast's site for local buildings http://www.cambridge2000.com/ ... which we negotiated an arrangement with, just adding a simple credit and link. Actually has some aerial shots as well which have proved very useful.

Other respondees found similar local websites.

And other sources include commons.wikimedia.org and sxc.hu.