Wikimedia
Wikipedia: John Glenn
An open-source encyclopedic site containing the biography of astronaut John Glenn discusses his many accomplishments and contributions to the space program.
NASA
Nasa: Astronaut Biography:john Glenn
Extensive biographical information with personal data, education, special honors, aviation experience, NASA experience and space flight experience.
Mocomi & Anibrain Digital Technologies
Mocomi: John Herschel Glenn Jr Biography
Interesting biographical information, fun facts, and famous quotes about John Glenn, the first American to orbit the earth.
Other
John Glenn: Astronaut/senator
A concise biography which describes the highlights of the life of John Glenn. Two photos are included in this site.