1860 – Parisian typesetter and inventor Édouard-Léon Scott de Martinville used his Phonoautogram to record sound onto paper but had no way to play it back.
http://www.nytimes.com/2008/03/27/arts/27soun.html
1919 – Presper Eckert was born in Philadelphia. Eckert became famous for his work, with John Mauchly on the ENIAC project.
http://www.computer.org/portal/web/awards/entrepreneuereckert
1959 – NASA publicly announced the selection of the United States’ first seven astronauts, who quickly became known as the “Mercury Seven”.
http://history.nasa.gov/40thmerc7/intro.htm
Read Tom’s science fiction and other fiction books at Merritt’s Books site.