Unknown: [ Underwood & Underwood ] [ 1922 ]. Later printing. An unframed silver print mounted on backing board showing Steinmetz (the Father of Electrical Engineering and the founder of the GE Research lab) and Thomas Edison examining some insulators on a laboratory table at GE in 1922. While this image was first published in 1922, this may be a later printing of the image. Near Fine. Photograph. 
On board that is 12 3/8 inches by 8 3/4 inches. Photographic paper is 8 x 10, and actual image on the photographic paper is 7 1/4 x 8 1/2 inches. With extensive remarquing in the image for publication, most of the laboratory in the back has been airbrushed out. The outlines of Steinmetz's head have been highlighted, the table edge softened, etc. This is a famous image that has been published in many forms (some with people in the background, some as here with nothing in the background) In this particular shot, it looks like the people sometimes seen in the background aren't there, as outlines of windows, etc can be seen underneath the airbrushing.
Covered with tissue, and then paper. Rear notes "Photo Underwood & Underwood. Thomas Edison & Dr. Steinmetz in Steinmetz Laboratory" and below that "Chapter XIX ?? II, Stuart(?) 313A"
We bought this image with another Edison photograph which was published in a book by Caldwell circa 1946. But we have not been able to determine conclusively where this photograph was published.
A special copy, as it was very likely published, and large enough to have a great presence framed.