Sharing some recent research on award opportunities for published books. If you published a book in the past year, this might be helpful. Most do not allow self-published books, and some require your publisher to nominate. In any case, be sure to check the eligibility requirements because they vary according to location, publication dates, and submission details.
When I started my search, I found most awards request manuscripts, and the award is publication, which is wonderful. But what if your book is already published? My list is not exhaustive, of course, and I tended to focus on awards that consider books from small presses.