Vintage postcards, rare books, old paper advertisements, aged photographs, comic books, antique toys and pop memorabilia are a few of the items featured by more than 200 vendors in the Spring Edition of the Allentown Paper Show, 9 a.m. - 5 p.m. April 25 and 9 a.m. - 3 p.m. April 26, Agri-Plex Agriculture Hall, Allentown Fairgrounds, 17th and Liberty streets, Allentown.