National Academy of Engineering
Greatest Achievements: Airplane
This page provides an overview of the history behind one of the greatest engineering innovations of all time:the airplane. There is also a timeline showing its development.
Siteseen
Siteseen: American Historama: Us Early Aviation History
A comprehensive overview with detailed facts about early aviation, aviators, and the airline industry.
A&E Television
History.com: How Did Baseball's Seventh Inning Stretch Originate?
The American tradition might date to President William Howard Taft in 1910, but it could have started in 1869. The seventh-inning stretch, when fans rise from their seats for a brief break after the top of that inning is complete, is as...