The Friends of the Pennsauken Free Public Library and the Merchantville Stamp Club are hosting the second annual “Knowledge Through Books And Stamps” Exhibition from Oct. 22-28 in the Community Room at the Pennsauken Library, 5605 N. Crescent Blvd. Held during Library hours, the showcase features a variety of stamp exhibits on display. Attendees can vote for their favorite exhibit and get a chance to win a door prize. Formal opening ceremonies will be held on Saturday, Oct. 22 at 11:30 a.m., to be followed immediately with pizza and hoagies.