First Us Manned Space Flight, 1961 by Nasavrs
Human spaceflight - Wikipedia
The History of Space Exploration
The Space Shuttle's First Flight: STS-1
List of NASA missions - Wikipedia
Our Spaceflight Heritage: First Manned Spaceflight - SpaceFlight Insider
Skylab | History, Discoveries, & Facts | Britannica
Space exploration | History, Definition, & Facts | Britannica
File:World's First Five Spaceplanes.PNG - Wikimedia Commons
The 16 Most Important Space Missions in History
Proceedings of a Conference on Results of the First U.S. Manned Suborbital Space Flight: NASA/National Aeronautics and Space Administration with NIH & NAS: Amazon.com: Books
Alan Shepard: First American in Space | National Air and Space Museum
America's First Spaceship: Project Mercury (Infographic) | Space
Ride, Sally Ride: 35 Years Since America's First Woman in Space - AmericaSpace
NASA introduces America's first astronauts
Atop machines of war, they rode into the sky | MPR News
History of Manned Spaceflight - the pioneers | World Air Sports Federation
UPDATE: First American manned space flight in 9 years launches | News | valdostadailytimes.com
Alan Shepard Post-Space Flight
FAQ: Alan Shepard's Historic Flight as First American in Space | Space
How the space race launched an era of exploration beyond Earth
9 facts about America's first manned space flight
History of Manned Spaceflight - the pioneers | World Air Sports Federation
Frank Rubio's first spaceflight will turn into the longest mission by a US astronaut - KVIA
Photo Gallery: 50th anniversary of the first U.S. manned space flight | collectSPACE
60 years ago, Alan Shepard became the first American in space - U.S. Embassy & Consulates in Italy
1981: First Space Shuttle Flight | Guinness World Records
60 Years Ago: Alan Shepard Becomes the First American in Space | NASA
US spaceflight at 60: A lot has changed since NASA's 1st crewed mission | Space
1st manned Apollo mission launches, October 11, 1968 - EDN
First Us Manned Space Flight Acrylic Print by Nasa/vrs/science Photo Library - Science Photo Gallery
