Image Search
Some sources for public domain or images you can fairly use:
- https://pixabay.com/ Links to an external site.
- https://commons.wikimedia.org/wiki/Main_Page Links to an external site.
- https://www.flickr.com/groups/publicdomain/ Links to an external site.
- https://search.creativecommons.org/ Links to an external site.
There are many others. Make sure you check the license information carefully for any image you find and make sure you have rights to use it.