A2Acollection via https://opendata.archieven.nl/dataset/4E4C85AA495D45039CC0E82224CA5E9C
NNA Obdam 110, notaris Henrich Bernardus Gottmer, 1905 mei-juli
Westfries Archief, Hoorn, NNA Obdam 110, notaris Henrich Bernardus Gottmer, 1905 mei-juli, NNA Obdam 110, notaris Henrich Bernardus Gottmer, 1905 mei-juli, 110