Over 1,450 local city directories (over 900,000 pages) just released between the years 1816-1989:

U.S. City Directories (http://search.ancestry.com/iexec/?htx=List&dbid=1540)

Also:
New York Naturalization Indexes with over 650,000 records (http://www.ancestry.com/search/db.aspx?dbid=1629)

U.S. Census Mortality Schedules, New York, 1850-1880 with over 243,000 records (http://www.ancestry.com/search/db.aspx?dbid=1626)