A2Acollection via https://opendata.archieven.nl/dataset/AA88C5D2B26941D6B050A66EA8A755A9
NNA Hoorn 98, notaris Claas Boldingh Gzn, 1881 juni-sep
Westfries Archief, Hoorn, NNA Hoorn 98, notaris Claas Boldingh Gzn, 1881 juni-sep, NNA Hoorn 98, notaris Claas Boldingh Gzn, 1881 juni-sep, 98