History of Morse Keys

Jim D is in the process of putting an article together on the history of morse keys..  I know over the years I have seen sparkers using hacksaw blades and in some cases quite elaborate morse keys.  If you still have these or any other keys you have acquired in your sea chest can you take a photo of them and pass it to Jim D for inclusion in his article. Please include any description/history of the keys as well.  Jim D’s email is dinger69@xtra.co.nz  Thanks Frank