Amazing stuff you can find out if you just ask.  

Last week, the Nassau County Clerk told me that the section/block/lot on the Assessor’s Tax Map Verification Letter is often incorrect. So if you are recording documents with Nassau County, use the S/B/L from the legal description. Do not use the S/B/L from that $225 letter you just bought.

According to the County Clerk, the maps used by the Assessor do not agree with the maps used by the Clerk.

As my grandmother used to say, “Who knew?”