Joseph Henry's Letter to William Brooke O'Shaughnessy (October 30, 1843)
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Request permissionsDownload image PrintLetter from Joseph Henry, then a professor at Princeton University and later first Secretary of the Smithsonian Institution, to William Brooke O'Shaughnessy, a physician, October 30, 1843. In the letter, Henry informs O'Shaughnessy that his own experiments with lightning rods have yielded results that support O'Shaughnessy's plan of protecting armories with multiple lightning rods placed at a distance from the building.
Historic Images of the Smithsonian
The accompanying PDF contains SIA2012-0996 and SIA2012-0997, which are pages scanned from the edited transcript of the original version and notes in the Joseph Henry Papers Volume 5, pages 445-446.
Institutional History Division, Smithsonian Archives, 600 Maryland Avenue, SW, Washington, D.C. 20024-2520, SIHistory@si.edu
October 30, 1843
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United States
SIA2012-2854 and SIA2012-2855
Number of Images: 2 ; Color: Color ; Size: 5 1/2w x 9h ; Type of Image: Document ; Medium: Paper