[Arlington, VA] : PBS, 2014

New York, NY : Thirteen/WNET, 1995

Chicago, IL : Questar, 2008

Louisville, CO : Gaiam Americas Inc., 2010

Burbank, CA : Warner Home Video, 1991
Full screen version.

Princeton, N.J. : Films for the Humanities and Sciences, 1996

Louisville, CO : Gaiam Americas, 2010

[United States] : Animal Planet, 2010

[United States] : Newbury Park, CA : Brentwood Home Video ; BCI Eclipse, 2005

Elk Grove Village, Ill. : Disney Educational Productions, 2008
Classroom ed.

Burbank, C.A. : SlingShot Entertainment, 2002

Washington, D.C. : National Geographic Video, 2006

Bethesda, MD : Distributed by Discovery Program Enterprises, 1991

Louisville, CO : Gaiam Americas, Inc., 2010

[Arlington, VA] : PBS Distribution, 2010
Widescreen edition

[Fountain Valley, Calif.] : New York : Coast Learning Systems ; Distributed by Insight Media, 2008

Burbank, CA : Slingshot Entertainment, 2002

Santa Monica, CA : Distributed by Genius Entertainment, 2007

Santa Monica, CA : Distributed by Genius Entertainment, 2007