Free Image sources

Images

• Pics4learning.com
• Photosforclass.com
• ClipSafari.com (clipart)
• Freepik.com  (clipart)
• Vecteezy.com/ (graphics)
• Unsplash.com
• Commons.wikimedia.org
•  Creative Commons Search Page - select sources and types of license
• Kozzi.com - free registration required to download without watermark
• Morguefile.com
• Flickr Advanced Search (select 'Only search within Creative Commons-licensed content)  
• Google Advanced Image Search (check usage rights)
• All-free-download.com/ (too many ads, but lots of free stuff)