Brooklyn Daily Eagle (1841-1902) Online
http://www.brooklynpubliclibrary.org/eagle/ 

Community Resource Database of Long Island
http://www.crdli.org - Find health, human service, and educational resources on Long Island.

Long Island Forum Index
http://pml.suffolk.lib.ny.us/LI_FORUM/index.html - Index to the Long Island Forum, published from 1938 to 2004.

Long Island Index
http://www.longislandindex.org - Regional data and community profiles.

Long Island Studies Institute
http://www.hofstra.edu/Libraries/WestCampus/SpecialCollections/sc_lisi_main.cfm - A rich repository for the study of Long Island local and regional history; located at Hofstra University.

Long Island Wine Country
http://www.liwines.com 

Long Island's Page of Pages
http://www.fordyce.org/long_island/index.html - "The most extensive directory of Long Island-related WWW sites."

Newsday.com: Long Island
http://www.newsday.com/news/local/longisland/