A Beginner's Guide to Coin Collecting
https://www.transferly.com/coi
Ancient Coins And Modern Fakes: How To Tell The Difference
Ancient Greek And Roman Coins: An Educational Site
https://www.forumancientcoins.com/numiswiki/view.asp?key=Doug%20Smiths%20Ancient%20Coins
Lawrence University Classics Department & Ottila Buerger Coin Collection
http://thor.lawrence.edu/omeka/buerger/