https://www.jamesmadison.gov/celebrating-250-years
Celebrating 250 Years | James Madison Foundation
The James Madison Memorial Fellowship Foundation was established by Congress in 1986 for the purpose of improving teaching about the United States Constitution...
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https://www.uspto.gov/about-us/history/freedom250
Celebrating 250 years of discovery, creativity, and enterprise | USPTO
As the United States celebrates its 250th anniversary, learn about 250 years of American innovation.
celebrating 250 yearsdiscoverycreativityenterpriseuspto
https://www.visitthecapitol.gov/america250
Celebrating 250 Years | U.S. Capitol - Visitor Center
celebrating 250 yearscapitol visitor center