Archiefkaart Petrus Johannes Hoofman 21-05-1921 - 2 Rechtstreekse Verwijzingen https://archief.amsterdam/indexen/deeds/98533422-d86a-56a3-e053-b784100ade19?person=98533422-d86b-56a3-e053-b784100ade19 https://archief.amsterdam/archief/30238/1068