Disney loses Mickey, Minnie Mouse copyright protection for Steamboat Willie

What Happens When Disney Doesn't Own Mickey Mouse Anymore?

Does the Steamboat Willie short by Walt Disney going into the public domain mean that Disney will lose control over the Mickey Mouse character? - Quora

Mickey Mouse horror films announced as Disney copyright expires

The Mickey Mouse Protection Act: What Video Game Developers Need to Know

Disney Officially Loses Rights To Mickey Mouse, Multiple Characters Next

Artists Are Turning Mickey Mouse R-Rated, and Disney Can't Stop Them - Inside the Magic

Disney to lose its Mickey Mouse copyright - but you still can't use it. Here's why

Mickey Mouse: Disney loses copyright of early version of cartoon character featured in Steamboat Willie, Ents & Arts News

Steamboat Willie - Wikipedia