The links below are to articles that take a look at what works are now in the public domain in the USA.

For more visit:
– https://lithub.com/everything-published-in-the-greatest-year-for-books-ever-is-now-in-the-public-domain/
– https://ebookevangelist.com/2020/12/31/public-domain-day-2021-works-from-1925-are-in-the-public-domain/
– https://goodereader.com/blog/e-book-news/these-are-all-of-the-new-ebooks-that-are-in-the-public-domain