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Alexander Graham Bell's work and interests extended far beyond the invention of the telephone. Explore his papers here. [...] »
The Library of Congress offers an archive of more than 9 million primary sources dating from 1490 to the present. [...] »
View fantastic photography throughout the ages in over 15 exhibits. [...] »
Get to know Benjamin Franklin through his own writings, cartoons, and letters. [...] »
![Letter. [Notes for electric telescope, 1880 Feb. 27]. LOC](http://teachinghistory.org/system/files/imagecache/thumbnail/emile.jpg "Letter. [Notes for electric telescope, 1880 Feb. 27]. LOC")
Listen to the recordings of the creator of the microphone and gramophone player. [...] »
Search over 200 prominent African American scientists. [...] »
Explore sources from the mid-18th-to-early-19th-century European migration into the Ohio River Valley. [...] »
More than 400 speeches by women—politicians, scientists, and celebrities. [...] »
Meet 30 influential African Americans who contributed across a wide variety of fields. [...] »
