"This collection does not include records from metropolitan New York at this time."
"The records are images from probate records in various county Surrogate Courts in New York. The content of the probate records and their year range vary by county. Most records end in the 1920s with some indexes continuing to the year 1971."
Since list of 9 currently-available counties is headed by Albany, where one of my aunts died in 1970, I clicked on to see what years were available: records only to 1887, and index only to 1959.