A search on Norman Rockwell came up with 371 paintings, all under copyright protection. Extravagant, but c'est la vie. Other choices available. Prices include shipping. Lessons are e-mailed.
Site also has newspaper articles, music and games in each language.
Pen pals too. Just click on the map. Lots of competition. Links to other sites. They're called cheat codes, but they make the games more fun.