1. Free Library of Philadelphia, Lewis T173 Bookmark DS ID: DS5963 Title: Communal constitution Place: undetermined Date: 1000-1500
2. Free Library of Philadelphia, Lewis T217 Bookmark DS ID: DS6007 Title: Charter Place: undetermined Date: 1000-1500
3. Free Library of Philadelphia, Lewis T230 Bookmark DS ID: DS6020 Title: Charter Place: Somerset and England Date: 1000-1500