Powell's Books Powell’s Books is the largest used and new bookstore in the world. An Independent bookseller, we stock more than 1.5 million titles at our seven Portland, Oregon locations – and you’ll find all the books together at our web site. The site features monthly contests, staff-picked Great Deals on Really Good Books – even a function to browse among only those used books we’ve acquired in the last two weeks. Powell’s is also home to the world’s largest collection of out-of-print and rare editions, some volumes dating back as far as the mid 1500’s. The Washington Post called Powell’s “perhaps the best bookstore in the world.”