Sources for Neptune:

Bailey, Donna. The Far Planets. Steck-Vaughn Co, Austin, TX.1991. 

McNab, David, and James Younger. The Planets. New Haven and 
London: Yale University Press, 1999.

"Neptune Fact Sheet," National Space Science Data Center. Online. 14 July 2000.  
http://nssdc.gsfc.nasa.gov/planetary/factsheet/neptunefact.html 

"Neptune [Planet]." World Book Multimedia Encyclopedia. Chicago: World Book 
Inc., 1997.

Vilas, Faith. The New Solar System. Ed. J. Kelly Beatty, Carolyn Collins 
Peterson, Andrew Chaikin. Cambridge, Massachussets: Cambridge University 
Press, 1999.

Photo Credits for Neptune:

Triton: (triton_close.jpg) Upclose picture of Triton. Color image of Triton, 
Neptune's largest satellite.  NASA ID: P-34764C 
http://nssdc.gsfc.nasa.gov/image/planetary/neptune/triton_close.jpg

Neptune: Color image of Neptune and the great dark spot. Courtesy of 
NSSDC and NASA. NASA photo number P-34611C.   
http://nssdc.gsfc.nasa.gov/image/planetary/neptune/neptune.jpg 

Neptune with picture of sled like spot: Picture of Neptune's curious sled 
looking spot. Courtesy of NASA/JPL/CalTech and NSSDC. NASA Photo number 
P-34632C Voyager 2-N32C. Taken by the Voyager 2 around August 21, 1989.
http://nssdc.gsfc.nasa.gov/image/planetary/neptune/neptune_gds.jpg 

Neptune picture of the clouds going around: Two pictures of  Neptune taken by 
the Hubble Telescope. Shows Neptune's Clouds swirling around. Almost true color 
images. Courtesy of NASA/NSSDC.
http://nssdc.gsfc.nasa.gov/image/planetary/neptune/hst_neptune.jpg 

Proteus: Image of the first of six new moons discovered by Voyager 2 at Neptune: 
Proteus. NASA ID: P-34727. Courtesy of NASA/NSSDC. 
http://nssdc.gsfc.nasa.gov/image/planetary/neptune/1989n1.jpg 

Close up of Great Dark Spot: Courtesy of NASA/NSSDC. (darkspot.jpg) 
NASA ID: P-34672C.  
http://nssdc.gsfc.nasa.gov/image/planetary/neptune/darkspot.jpg 


Neptune's N Ring: Picture of the rings of Neptune taken by the Voyager 2. 
NASA ID: PIA01997. Courtesy of NASA/JPL.
http://photojournal.jpl.nasa.gov/cgi-bin/PIAGenCatalogPage.pl?PIA01997