The First Morse Key.

Below is a sketch of the first Morse Telegraph Key invented by Alfred Vail in 1844. He named it the "Correspondent", known to this day as the "Vail Correspondent".
Sketch artist unknown at the moment.

Below can be seen the next Telegraph Key that Vail designed. He called this the "Vail Lever Correspondent". This example is a reproduction made by Kent Keys of the U.K.
The original is on permanent display at the Smithsonian Institute, Washington DC, USA.