These sources were very helpful.
Adler, David A. Wonders of Energy, Troll Associates, 1983.
Bains, Rae. Discovering Electricity. Troll Associates, 1982.
Bartholomew, Alan. Electric Mischief: Battery-powered gadgets kids can build. New York, NY: Kids Can Press, Ltd., 2002.
Tomecek, Stephen. M. Understanding Electricity. Washington, D.C: National Geographic Society, 2002.
Whalley, Margaret. Experiment with Magnetism and Electricity. Princeton, NJ: Two-Can Publishing LLC, 2002.
Cole, Joanna. The Magic School Bus and the Electric Field Trip. New York, NY: Scholastic Inc., 1997.
Capeci, Anne. The Magic School Bus: Chapter Book, Electric Storm. New York, NY: Scholastic Inc., 2002.
Carmi, Rebecca. The Magic School Bus: Chapter Book, Amazing Magnetism. New York, NY: Scholastic Inc. 2001.
National Science Resource Center/Science and Technology for Children . Electric Circuits.
Donovan, Frank R. The Many Worlds of Benjamin Franklin. New York, NY: Harper and Row, 1963.
Fritz, Jean. What's the Big Idea, Ben Franklin? New York, NY: Scholastic Inc., 1976.
Waters, Kate. Mary Geddy's Day: A Colonial Girl in Williamsburg. New York, NY: Scholastic Inc., 1999.
Visit The Franklin Institute Science Museum's website, a wonderful source for information about Ben Franklin.
The Keystone Science Network's website has a plethora of the background information for teachers about electric circuits and related topics.
Generous founding support for the Harcourt Teacher Leadership Center and the Harcourt Learning Labs was provided by the Harcourt General Charitable Foundation on behalf of Harcourt, Inc.