Former Owner
- Lathrop C. Harper, Inc.1
- Linda Ehrsam Voigts1
- Lisa Kiser1
- Louis d'Aumont de Rochebaron1
- Lucien Magne1
- Lucy Evans Chew1
- Léon Techener1
- Mayfair Rare Books and Manuscripts1
- Michel de Léon1
- Mikhail Golitsyn1
- Monastery of Saint Peter (Erfurt, Germany)1
- Museo Cavaleri1
- Paul Joseph Sachs1
- Paul Riant1
- Paul Sabatier1
- Peter Christos1
- Phillip J. Pirages Fine Books & Manuscripts1
- Prince Augustus Frederick, Duke of Sussex1
- Riddagshausen Abbey1
- Robert S. Pirie1