It's not "the first of its kind" in NYC. NYC has always had Wiccans. Back in the 1970's, there was a place called
The Magickal Childe on 18th street off of 6th ave which held classes on Wicca. For a while I had a Wiccan girlfriend. A short while. She was very affectionate but was associated with people I found far too strange for my tastes.