Do you know of a good outlet for photos and artwork that are in the public domain? Once I find something, how can I be sure it’s really okay to use?
Most of the website claiming their images they are “in the public domain” have actually lifted those images from other websites that make the same claim. Specific circumstances must occur for something to be in the “public domain.” See:
For images that can be legally used in and on books, I trust https://www.istockphoto.com. It’s not free but the flipside is you don’t have to worry about a lawsuit.
THE DO-IT-YOURSELFER’S GUIDE TO SELF-SYNDICATION
A practical resource outlining the self-syndication process, step-by-step. Packed with detailed information and useful tips for writers looking to gain readership, name recognition, publication and self-syndication for their column or articles.