A2Acollection via https://opendata.archieven.nl/dataset/E114E421C8514E3E961B76DA82D88139
NNA Obdam 204, notaris Petrus Hendricus Hilbrand, 1924 mei-juni
Westfries Archief, Hoorn, NNA Obdam 204, notaris Petrus Hendricus Hilbrand, 1924 mei-juni, NNA Obdam 204, notaris Petrus Hendricus Hilbrand, 1924 mei-juni, 204