On this day in history, the cornerstone of the United States Capitol was laid by George Washington in 1793.
Since then, the Capitol has been rebuilt and expanded dramatically (by no less than four different architects).
This daguerreotype is from a trio of images by John Plumbe, Jr. that form the first photographic record of the site.
The United States Capitol, 1846, John Plumbe, Jr. J. Paul Getty Museum.
Essex Street, Salem, Mass, circa 1870
MIT built this Van de Graaff lightning static monster machine for experiments; it eventually made its way to the Boston Museum of Science, where it can be seen several times a day generating the Lightning Show.