Other
Kids Page: United States Patent and Trademark Office
This source allows users to learn all about inventions and patents, play some fun games, and enter a contest.
Smithsonian Institution
National Postal Museum
Even if you aren't a stamp collector, this is a fascinating stop in your search for US postal service history. Be sure to click on their special selections like "Inverted Jenny, A famous stamp error." Excellent exhibits explain the...
University of Nebraska Omaha
University of Omaha: The Real Mc Coy
The University of Omaha provides a cross-curricular lesson plan for 4-6th grades involving economics and language arts. "Elijah McCoy was an African-American inventor who successfully designed an automatic oil cup that may have inspired...
Siteseen
Siteseen: American Historama: The United States Post Office
Comprehensive resource features detailed facts and information about the United States Post Office established to guarantee the privacy of personal correspondence in the USA.