A2Acollection via https://opendata.archieven.nl/dataset/4470A32731BC4D58A893E2A694EC8717
NNA Hoorn 199, notaris Hinno Willem Jan Sannes, 1908 maa-mei
Westfries Archief, Hoorn, NNA Hoorn 199, notaris Hinno Willem Jan Sannes, 1908 maa-mei, NNA Hoorn 199, notaris Hinno Willem Jan Sannes, 1908 maa-mei, 199