Maps and mapmaking have played an important role in Pennsylvania’s history. Join us for a conversation about HSP’s extensive map collection, including such treasures as first map of Philadelphia, the Walking Purchase, and the John Wallis Map of the United States. The guest speaker will be Joseph Garver, Librarian for Research Services of the Harvard Map Collection. Followed by a reception and document viewing. Please RSVP to Aja Raymond via email at firstname.lastname@example.org or call 215-732-6200 x214.