Former Owner
- Norman Winestine1
- Norza, Leon1
- Novalesa Abbey1
- Oliver R. Barrett1
- Paul Grinke1
- Paul Sabatier1
- Pettini Libraria di Antonio Pettini1
- Philip Kerr, 11th Marquess of Lothian1
- Pierre Tassel1
- Pietro Antonio Maffei1
- Pietro Bembo1
- Pietro Civaleri1
- Prince Augustus Frederick, Duke of Sussex1
- Ramón de Mesonero Romanos1
- Raoul Chandon de Briailles1
- Raymond Oliver1
- Reading Abbey1
- René Henry1
- Richard Henry Wilde1
- Richard Nykke1