A2Acollection via https://opendata.archieven.nl/dataset/6F5AA15AE757492797BAF8B91844AFDE
NNA Obdam 125, notaris Henrich Bernardus Gottmer, 1908 mei-aug
Westfries Archief, Hoorn, NNA Obdam 125, notaris Henrich Bernardus Gottmer, 1908 mei-aug, NNA Obdam 125, notaris Henrich Bernardus Gottmer, 1908 mei-aug, 125