Browse over 500 million images, available for reuse. You must cite every image you use in your work.
You must cite all images in your work. Be aware "All images on Commons should be reusable but…
…each may have different requirements for crediting a photographer, linking a license, etc." (Wikimedia Commons)
If you use GOOGLE IMAGES to find images, you must filter for copyright free images.
Steps to filter for copyright free images:
1. Search for an image in Google Images
2. Select the Tool Tab at the top of the page
3. Select the Drop Down Menu entitled Usage Rights
4. Select Creative Commons Licenses
5. You may now use the images that have been filtered BUT you still need to cite the source.
Featuring items from the Library's digital collections that are free to use and reuse.
Pixabay - Royalty Free Images and Stock photos
Create a free account to access this huge repository of fresh photos, illustrations, and vectors. You must cite every image you use in your work and provide attribution for each creator on the site.