Former Owner
- Milt Freudenheim1
- Moissac Abbey1
- Monasterio de El Paular1
- Monastery at San Gregorio al Celio1
- Nathaniel Sherman Bouton1
- Novalesa Abbey1
- Oliver Henry Perkins1
- Otto Ege1
- Otto Schäfer1
- Paolino Gianfilippi1
- Peterborough Central Library1
- Philip III the Good1
- Piero Ginori Conti1
- Pietro Antonio Crevenna1
- Pietro Canal1
- Raoul Chandon de Briailles1
- Richard Heber1
- Riederer, Georg Wilhelm1
- Robert Stayner Holford1
- Robert Williams1