In general, the majority of inaccessible records relate to divorce and adoption. The location of the defendant determines the location of the litigation. So, if the Ashs lived in Brooklyn, the case would have been determined in Brooklyn. Civil cases of this nature would have been in the Kings County Supreme Court. Similarly if the Ashs lived in Manhattan, the case would have been in the New York Supreme Court. Regardless, you should look up the telephone number of the County Clerk to find out where the records are held.