Richard L. Pflederer

• Catalogue of the portolan charts and atlases in the Library of Congress
• Catalogue of the portolan charts and atlases in the Archivio di Stato di Firenze
• Catalogue of the portolan charts and atlases in the Bodleian Library
• Catalogue of the portolan charts and atlases in the British Library
• Catalogue of the portolan charts and atlases in the National Maritime Museum
• Catalogue of the portolan charts and atlases in the Newberry Library
• Catalogue of the portolan charts and atlases of the Huntington Library
• Census of portolan charts & atlases