Thomas Edison used this carbon-filament bulb in the first public demonstration of his most famous invention, the firs
National History Day
Examine collections of the Museum's key resources on major themes in American history and social studies teaching. Additional resources can be found in the main search areas of the website.
These resources are designed to help you with National History Day. Be sure to check out these websites, too, for great primary sources: Galaxy of Images from Smithsonian Libraries; Learning Lab from the Smithsonian Center for Learning and Digital Access; Smithsonian Collections Search Center (select "search" then "only return results only with online media")