Since joining Christie's, Peter has worked with several important collections including the papers of the Marquis de Chastellux, The Findlay-Wright Papers, the Roger Judd Collection of American Historical Autographs and the Louisiana Purchase Collection of A. J. Tullock as well as the Albert Einstein God Letter, bringing $2.89 million—a world record for an Einstein letter at auction.
Peter holds a B.A. in History from Antioch College, and a M.A. in History from the University of Delaware with a certificate in museum studies. He has curated several exhibits including a major exhibition at Federal Hall in New York celebrating the bicentennial of the birth of Abraham Lincoln in 2009. Peter is a member of the Bibliographical Society of America, the New York Historical Society, and is a Trustee of the Manuscript Society.