This image was acquired from
flickr. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
history monochrome blackandwhite indoor black and white The pioneer model of the air turbine handpiece is presented to Smithsonian Institution left to right Mr. P.H. Tanner Rear Admiral C.W. Schantz Dental Corps U.S. Navy and Captain E.G.F. Pollard Dental Corps U.S. Navy. Portraits. Scene. Schantz Curtiss William Rear Admiral Dental