A2Acollection via https://opendata.archieven.nl/dataset/F4CC294325A04B4E9078A9BC2EB0EB8D
NNA Obdam 115, notaris Henrich Bernardus Gottmer, 1906 mei-juli
Westfries Archief, Hoorn, NNA Obdam 115, notaris Henrich Bernardus Gottmer, 1906 mei-juli, NNA Obdam 115, notaris Henrich Bernardus Gottmer, 1906 mei-juli, 115