I imagine many in this group who have researched the community in Amsterdam during the 19th century have used the Bevolkingregisters - and if you haven't, definitely check it out ([https://archief.amsterdam/indexen/index.nl.html](https://archief.amsterdam/indexen/index.nl.html)). In 1943 a Dutch resistance group led by Willem Arondeus, an openly gay artist and writer, bombed the public records office and destroyed a large portion of the register. This act saved countless lives.https://youtu.be/Fb62QfnSRTU