NNA Obdam 87, notaris Henrich Bernardus Gottmer, 1900 mei-juli
Westfries Archief, Hoorn, NNA Obdam 87, notaris Henrich Bernardus Gottmer, 1900 mei-juli, NNA Obdam 87, notaris Henrich Bernardus Gottmer, 1900 mei-juli, 87
A2Acollection via https://opendata.archieven.nl/dataset/DAC23F6151C841568850808EA498F965