See also

External links

• "Model 377 Stratocruiser Commercial Transport" by Boeing. Retrieved October 5, 2006.
• "All About Guppys", by Daren Savage. Updated September 17, 2006. Retrieved October 5, 2006.
• "Pregnant Guppy" by Robert S. Tripp. Written Spring 2002. Retrieved October 5, 2006.
• "Boeing 377 Pregnant Guppy" by Kenneth W. Shanaberger. Updated August 31, 2004. Retrieved October 5, 2006.
• "The Plane That Won The Space Race" by Margy Bloom. Retrieved May/June 2010.