1. Free Library of Philadelphia, Lewis E 134 DS ID: DS4488 Title: Prayer book Place: Cologne and Germany Date: 1500-1599
2. Free Library of Philadelphia, Lewis E 177 DS ID: DS4523 Title: Prayer book Place: Germany and France Date: 1200-1299
3. Free Library of Philadelphia, Lewis E 178 DS ID: DS4524 Title: Prayer book Place: Cologne and Germany