Biography.com.
Dewey Browse. Gail Shea Grainger, Chesterfield School, 2004.
Grand Rapids Public Library.
Information Please Almanac.
Internet Public Library.
iTools, 2004. (Dictionary, encyclopedias, translators and more.)
Regional Educational Media Center 8. REMC8. Kent Intermediate School district.
Thinkfinity.  Verizon, 2008.
Michigan Teacher Network.  Merit Network, Inc
Public Museum of Grand Rapids.
Smithsonian.
The Free Dictionary. Farlex, 2007.
The Library of Congress.
U. S. National Archives & Records Administration.
Way Back Machine. Internet Archive, 2008.

MAPS

Map Collection, American Memory. Library of Congress, 2008 (historical maps).
Maps of the United States.  USGS, 2008 (scientific maps).
MapStats of the United States. FedStats, 2008.
National Atlas.gov. National Atlas of the United States, 2008 (general maps).
National Geographic. 2008 (general maps).
TopoZone.  TopoZone.com, 2008 (general and scientific maps).
World Atlas and Map Library. Infoplease.com, 2008 (general maps).
World Book Fact Book. Major source of information about countries gathered and compiled by the CIA.  CIA, 2008.
World Geography. ABC-CLIO, 2008 (general maps).