Protecting Your Art: Copyright, published as part of the Agora Gallery's "How-To" section of their Advice from the NYC Art Experts website, August 2017.
Springboard for the Arts copyright resources for artists, generated by a search query. Springboard has resource centers in St. Paul and Fergus Falls.
What I Wish They Had Taught Me In Art School, a blog post by Holland Gormley, Public Affairs Specialist in the Outreach and Education section of the U.S. Copyright Office at the Library of Congress, September 2020.
Visual Arts Registration, part of the Copyright.gov Registration Portal.
Infographics above are from Lili Chin, artist and owner of Doggie Drawings, and are available for reuse through a Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)
Copyright & Fair Use (Macalester College Visual Resources Library, an overview of available resources for Macalester students, staff, and faculty for study, teaching, and creation of artworks.
Copyright and Fair Use for Artists, from Art Business Info. For Artists, a website managed by Katherine Tyrrell. While she is based in London, much of the material here applies to the U.S. as well as other international concerns.