See also NAS recommended programs:
https://www.nas.org/resources/recommended_programs
“Here is a list of excellent programs in American studies, Western civilization, Great Books, free institutions, and the study of the Constitution and democratic government. These campus-based programs help restore rising generations attention to important but increasingly neglected ideas.”
I perused the list here and in the links. I bookmarked this thread because
1. I haven’t read any of these books.
2. I ain’t got no culture, and am desirous of not being a FReeptard.
I would guess that many of the older books are public domain and available for free download at Project Gutenberg.