A2Acollection via https://opendata.archieven.nl/dataset/1229B24DFB314F0AA4E62B1EBC24398F
Dienstbodenregister Spanbroek 21, 1881-1901.
Westfries Archief, Hoorn, Dienstbodenregister Spanbroek 21, 1881-1901., 21