A2Acollection via https://opendata.archieven.nl/dataset/7503328EDCD142E3859C9D87F8B1A4B1
NNA Hoorn 47, notaris Gerrit Boldingh, 1862 juni-dec
Westfries Archief, Hoorn, NNA Hoorn 47, notaris Gerrit Boldingh, 1862 juni-dec, NNA Hoorn 47, notaris Gerrit Boldingh, 1862 juni-dec, 47