Ted O’Reilly is Head of the Manuscript Department at the New-York Historical Society, where he has worked since 2004. He holds a B.A. in history from the College of the Holy Cross, an M.A. in Irish Studies from the National University of Ireland, Galway, and an M.L.S. from the Palmer School, Long Island University. Today he speaks with The Junto about the New-York Historical Society’s accessioning of a new collection—its own Institutional Archive.