Acknowledgements

We would like to acknowledge the following websites:

http://starchild.gsfc.nasa.gov/docs/StarChild/shadow/whos_who_level2/armstrong.html

http://www.astronautix.com/flights/vostok1.htm

http://www.grc.nasa.gov/WWW/PAO/html/neilabio.htm

http://www.hq.nasa.gov/office/pao/History/ap11ann/comments.htm

http://www.hq.nasa.gov/office/pao/History/ap11ann/introduction.htm

http://www.hq.nasa.gov/office/pao/History/sputnik

http://www.jsc.nasa.gov/Bios/htmlbios/a

http://www.jsc.nasa.gov/Bios/htmlbios/armstrong-na.html

http://spaceflight.nasa.gov/home/index.html