A2Acollection via https://opendata.archieven.nl/dataset/36B50399B2C2426E977B3348B68C827F
NNA Obdam 153, notaris Henrich Bernardus Gottmer, 1914 maa-apr
Westfries Archief, Hoorn, NNA Obdam 153, notaris Henrich Bernardus Gottmer, 1914 maa-apr, NNA Obdam 153, notaris Henrich Bernardus Gottmer, 1914 maa-apr, 153