1 British Library - United Kingdom, London
170 million items
2 Library of Congress - United States, Washington, D.C.
151.8 million items
3 New York Public Library - United States, New York City
53.1 million items
New York Public Library Public Library System
5th Ave at 42nd St, New York, NY 10018
LEO - searches the circulating collections
CATNYP - searches the research collections
917-ASK-NYPL - ( Got a question? Send tweet, text at 66746, or call 917-ASK-NYPL )
Every day, except Sundays and holidays, between 9:00 am and 6:00 pm EST/EDT, anyone, of any age, from anywhere in the world can telephone 917-275-6975 and ask a question. The library staff will not answer crossword or contest questions, do children's homework, or answer philosophical speculations.
The NYPL Digital Gallery is a database of over 700,000 images digitized from the library's collections.
The Digital Gallery was named one of Time Magazine's 50 Coolest Websites of 2005
and Best Research Site of 2006 by an international panel of museum professionals. http://www.nypl.org/