Looking for free images? Here are thirty sites where you can find completely free images, available for use on your blog or web site. All of these sites offer royalty free images for your use (be sure to check each site for specific guidelines that they request you follow in order to use their images).
A great way to find free images. You have a few different ways to search: via a dedicated stock photo image resource search, web photos (Flickr especially), or in the public domain.
Karen's Whimsy offers free public domain images: "hundreds of scans of beautiful images from my collection of old books, magazines, and postcards. They are all from material printed prior to 1923 and are in the public domain."
Burning Well is a great place to find free images: "BurningWell is a repository for public domain (free for any use) images. You are free to download, copy and use the photos you find here for any purpose. These free images were donated by photographers from around the world."
Thousands of free images from the National Aeronautics and Space Administration (NASA), the National Oceanic and Atmospheric Administration (NOAA), and the U.S. Fish and Wildlife Service (FWS). All of these images are in the public domain, but individual restrictions might still apply, so check the individual image requirements carefully.