I saw this wonderful framed painting while visiting the New England Museum of Wireless and Steam earlier this year. It is located at the top of the stairs leading into the room housing the Massie Wireless Station, and is, I assume, some sort of marketing piece. The bottom of the frame as the following "I have a wireless message for you." in what appears to be metal cast type. To the right of this is another casting of a straight key.
I do apologize for the poor quality of the photo, the hall was somewhat dark, and the flash really messed things up.
Does anyone have any idea of the origin of this image?