A2Acollection via https://opendata.archieven.nl/dataset/C623DB721C7B41DE8605E153048FA91E
NNA Obdam 177, notaris Henrich Bernardus Gottmer, 1919 maa-apr
Westfries Archief, Hoorn, NNA Obdam 177, notaris Henrich Bernardus Gottmer, 1919 maa-apr, NNA Obdam 177, notaris Henrich Bernardus Gottmer, 1919 maa-apr, 177