A2Acollection via https://opendata.archieven.nl/dataset/7B6CA36207AE4BC1AE468A9410E7FBB0
NNA Obdam 182, notaris Henrich Bernardus Gottmer, 1920 feb-maa
Westfries Archief, Hoorn, NNA Obdam 182, notaris Henrich Bernardus Gottmer, 1920 feb-maa, NNA Obdam 182, notaris Henrich Bernardus Gottmer, 1920 feb-maa, 182