Millions of books have exited and reentered the New York Public Library for more than a century, and the institution has finally run the numbers on some of its most popular offerings. The New York Times reports that the library sifted through the history of its inventory for six months to find the 10 books that've been checked out the most over the years. The victor: the 1962 kids classic and Caldecott Medal winner The Snowy Day, by Ezra Jack Keats, said to be the first picture book to star an African-American boy, per the Washington Post. It's been taken out 485,583 times in total. NPR notes that only one nonfiction book appears on the list: Dale Carnegie's How to Win Friends and Influence People. Here, the rest of the top 10, with an honorable mention awarded to Goodnight Moon, by Margaret Wise Brown: