Public Domain Mark
You can use this work for any purpose without restriction under copyright law. Read more about this licence.
Credit
Morse's patent : full exposure of Dr. Chas. T. Jackson's pretensions to the invention of the American electro-magnetic telegraph / by Amos Kendall. Public Domain Mark. Source: Wellcome Collection.
Provider
This material has been provided by the National Library of Medicine (U.S.), through the Medical Heritage Library. The original may be consulted at the National Library of Medicine (U.S.)