A2Acollection via https://opendata.archieven.nl/dataset/42D9A81AB34B45E6A1D6E3631967E8D6
NNA Obdam 47, notaris Andreas Joannes Haarselhorst, 1881 mei-dec
Westfries Archief, Hoorn, NNA Obdam 47, notaris Andreas Joannes Haarselhorst, 1881 mei-dec, NNA Obdam 47, notaris Andreas Joannes Haarselhorst, 1881 mei-dec, 47