Alfred Vail made this key, believed to be from the first Baltimore-Washington telegraph line, as an improvement on Samuel Morse's original transmitter. Vail helped Morse develop a practical system for sending and receiving coded electrical signals over a wire, which was successfully demonstrated

Learn about the history of predicting weather in the United States from actor Dwayne Starlin playing Joseph Henry, first secretary of the Smithsonian.  Henry played a crucial role in creating a weather prediction service in the United States that became the National Weather Service.  Th

Physical History United States Colt M1892 revolver, .38 caliber. Specific History Colt revolver carried by Captain Allyn K. Capron. General History Captain Allyn Capron was the son of West Point graduate E. Allyn Capron. The younger Capron was ki