Free Historical Stock Photos for Emails and Personal Websites. If you want old photogrpahs it is worth having a look around here, but note that the license is very restrictive so they cannot be used for commercial use.

The license of these images is displayed when you click on an image and most likely is the same as the one below for all images.

Terms of use: The image can be freely used by non-commercial users for educational and personal use.

I am not a laywer but most of these images should be out of copyright and i do not know how they are allowed to charge for them.