This is a set of law books covering the 187th to 190th New York Legislative Sessions, in 9 volumes.
The books are about 6.5" deep by 9.5" high and will occupy 22" of shelf space. One of the 1964 books is titled "Second Extraordinary Session". 1966 Volume 2 is Called "New York City Tax Legislation".
If you want additional sessions feel free to reach out.....