Books and Bookselling--19th Century 2 Publishers and Publishing--Pennsylvania--Philadelphia--19th century Booksellers and bookselling -- Pennsylvania -- Philadelphia 1 Economics--19th century 1 Medical Publications--19th century 1 Medical Publications--20th century 1 Publishers and Publishing--Philadelphia--20th Century 1 more ... Publishers and publishing 1 Publishing 1 Publishing and Publishers--Philadelphia--18th century 1 Publishing--19th century 1 Selling--Books 1 less ...