Witnesses to Donald Trump's inauguration in Washington, D.C. will snap countless photographs, many on their cell phones.
In 1857, John Wood broke new ground by capturing a single, four-second exposure of James Buchanan's rise to power.
The story is briefly described on the Library of Congress website.
"Montgomery C. Meigs, the Supervisory Engineer of the Capitol expansion, pasted the first-known photograph of an inauguration beside his journal entry for March 4, 1857," according to the site.
Meigs said Wood, "experimented with the photographic process" in anticipation of documenting Buchanan's inauguration."