Thanks for the articles and photos. I totally agree the house was older than 1910. You could tell just by looking at the construction and style. Having been inside a few times there was no doubt.
For anyone doing research on a private house in NYC needs to be aware that the City Real Estate records are notoriously wrong. Many older homes show a build date of 1920 or as in this case 1910. They seem to have been a guess on the part of the records department when the files were created. My own house has a 1920 build date while it can be found on older maps as early as 1884, I still don’t know the actual build date. This is very similar to the Bowie Dash house build misinformation above.