Any tips on how to best research an adoption record in NYC.?  My grandfather Henry ABRAMS was born 1888 0r 89.  He was adopted by Rachel LEVINE ABRAMS and Barnet ABRAMS.  In 30 some years I've had no luck finding information.  It is also possible Henry was adopted my his birth mother's sister, but I have no proof.  Any guidance would be greatly appreciated!
Connie Fisher Newhan #1272