Major Sources:
- United States Mint Web Site @ www.usmint.gov
- United States Mint Proof Set Certificates of Authenticity (included with all Proof Sets)
- Warman's Coins & Currency: 2nd Edition, by Allen G. Berman and Alex G. Malloy. ©1997 Alex G. Malloy
- Time Almanac 2002, Borgna Brunner, Editor in Chief. ©2001 Family Education Company
- New York Times Almanac 2006, John W. Wright, Editor. ©2006 New York Times Company
- World Book Millennium 2000 Computer Encyclopedia ©1999 World Book, Inc. and IBM Corp.
- THOMAS Legislative Information on the Internet @ http://thomas.loc.gov
- "Rain and Wind Bring Down New Hampshire's Old Man." Kansas City Star 4 May 2003: A2
- Wikipedia: The Free Encyclopedia @ www.wikipedia.org
- P.S., Deep River, Connecticut, personal communication
- M.B., Toronto, Ontario, personal communication
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