Digital photography libraries and photo libraries

If you have a digital camera, maybe you could upload them to a digital photography library.

You may have to read about how to do it.

http://en..easyart.com/
http://uk.polylooks.com/

http://www.snapvillage.com/, you can earn a 30% royalties, illustrations can be sold as well.

http://www.bigstockphoto.com/
http://www.istockphoto.com/
http://www.photoboxgallery.com/