Finding the perfect photo for your website is very challenging. This article outlines the free stock photo sites I use for various projects.
Another site that gives you free web images but then you have to pay for larger sizes.
Free photos which have a marketing type theme. They even have some PowerPoint templates.
Royalty Free, Public Domain, Stock Photos. The site looks like it is from the 90s, but the images are pretty good.
The site doesnt work in Firefox, but there are some really good images and textures here.
Over 2,430 high-resolution free images scanned from more than 160 different old or rare books.