I just found out that New York City uses the 1999 NEC Code with a "New York City Amendment to the 1999 National Electrical Code and Related Administrative Provisions (Local Law 64/2001 & Local Law 41/2002)- Effective Date: January 1, 2003"
Before that, New York City was using a special Electrical Code of the City of New York last updated in July 1992.
See here for what I'm talking about and also if you want to buy them.
https://www.nycitystore.com/subcat.asp?sid=14The New York City Dept. of Buildings is at
http://www.nyc.gov/buildings