http://www.orps.state.ny.us/

NYS Association of Counties 
http://www.nysac.org/

State Assessment Contacts
http://www.orps.state.ny.us/ref/usamap/index.htm

IRS
http://www.irs.gov/

SPECIAL ASSESSING JURISDICTIONS:

NYC Link
http://www.nyc.gov/html/dof/html/jump/error.shtml


Nassau County Property Info
http://www.mynassauproperty.com/