1. University of Pennsylvania, Ms. Coll. 764 Item 105 DS ID: DS1933 Title: Power of attorney Date: 1422.
2. University of Pennsylvania, Ms. Coll. 764 Item 106 DS ID: DS1934 Title: Power of attorney Date: 1422.
3. University of Pennsylvania, Ms. Coll. 764 Item 155 DS ID: DS1978 Title: Power of attorney Date: 1476.
4. University of Pennsylvania, Ms. Coll. 764 Item 173 DS ID: DS1994 Title: Power of attorney Date: 1506.