Beverly Cleary turns 90 in April and all her 39 of her books are still in print. She’s sold 91 million copies — so far. She hints that her last book 1999’s “Ramona’s World” may truly be the last saying that although she has some notes on a new one she has no plans to write it and “it’s important to know when to stop.” Cleary has, however, agreed to a Ramona movie.