Library of America

Library of America names 112 books, every one listed here. The most approachable of them is Are You There God? It's Me, Margaret by Judy Blume (difficulty 25/100, about 1.5 hours); the hardest is The Recognitions by William Gaddis (85/100).

Questions

How many books are on Library of America?
112, all of them listed here with how hard each is to read and how long it takes.
Which book on Library of America is the easiest to read?
Are You There God? It's Me, Margaret by Judy Blume, difficulty 25/100, about 1.5 hours. The hardest is The Recognitions by William Gaddis, at 85/100.
How long would it take to read every book on Library of America?
About 1,157 hours for the 112 books ReadingRate measures, at 250 words a minute adjusted for each book's difficulty: 578 days at two hours a day.

Other lists: Penguin Classics Collection, Penguin Modern Classics, NYRB Classics, Everyman's Library, Biblioteca Ayacucho, Bibliothèque de la Pléiade, Heinemann African Writers Series, Oxford World's Classics, UNESCO Collection of Representative Works. All lists.