1. University of Pennsylvania, LJS 61 DS ID: DS745 Title: Writs Author: Richard II of England Place: London Date: 1407-1427
2. The Huntington Library, Art Museum, and Botanical Gardens, mssHM 81170 DS ID: DS9603 Title: Register brevium Author: Richard Nykke Place: London Date: approximately 1460, and later additions in early 16th c.