NASA
Nasa: Robert Goddard and His Rockets
Biographical site provided by NASA on the life and work of Robert Goddard. The site also includes a brief history of rockets up to the work of Dr. Goddard.
Cosmos 4 kids
Cosmos4 Kids: Exploration: Rockets
The entire history of rocketry took place in 100 years! The early 1900's saw their first appearance, and by the end of the century, rocket technology took many forms with the most famous being the Space Shuttle. The brief, to the point...
Wikimedia
Wikipedia: Rocket
Wikipedia provides an encyclopedia definition of a rocket, including information on rocket history, size, types, and more.