Curated OER
Stampin' Around Chicago
Students discuss the United States Postal Service and choose an artifact from one decade. In this art lesson, students research how the artifact chosen relates to Chicago and the United States. Students create their own postage stamp...
Smithsonian Institution
National Postal Museum: Postal Pack for Elementary Students [Pdf]
Discover how the mail moves across the country, learn how it was delivered before cars and other modes of transportation, and take a look at the history of the postage stamp. Games, lesson plans, curricular units and online murals are...
Other
Usps: Domestic Rate Calculator
Here is a chart compiled by the United States Postal Service that determines how much postage is required for a letter, large envelope, postcard, and etc. Many links. Link to International Rate Calculator.
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...