NYC Open Accessible Space Information System (OASIS) - Broad partnership mapping GIS (Geographic Information Services) data on green spaces in the city and making it freely available to the public as well as to partipating agencies and companies. - http://www.oasisnyc.net/
AskMaps - Map of New York City with index of streets and city monuments, ready for printing. - http://www.askmaps.com/001/mm3.php
Digital Atlas of New York City - Contains statistical information on population and race, ancestry, income and poverty, adult educational attainment, household types and Commuters. - http://130.166.124.2/NYpage1.html