An historic Boston church is selling the oldest known book in North America. In fact, the Old South Church hymnal is so old, it predates the United States by more than a century. The Bay Psalm book was the first book published in North America in 16-40 and is worth an estimated 20-million-dollars. Church members voted overwhelmingly to sell the book to pay for millions of dollars in church repairs. The Old South Church building itself is historic and dates back to 18-75. Church officials say the book will likely be auctioned off in six months.