Mary Elizabeth Hallock Greenewalt with light phonograph, photograph, 1920
Permanent ID:
11779Date:
circa 1920Inscription:
The color filters did not move with the turn table. They were stationary. (Recto, scrapbook page)Showing the phonograph with provisions for accompanying the record [illegible] by light color play on the globe. The color filters were around the turn table. See Greenewalt patent No 1345168. Demonstrated before El. Eng. Soc. at the Engineer's Club 13th and Spruce Sts Phila Pa (Recto, scrapbook page)
Format:
PhotographsDimensions:
Width: 20.5 cm, Height: 25.5 cm (image)Collection:
Mary Elizabeth Hallock Greenewalt papersRelated People or Organizations:
Wm. Shewell Ellis (photographer)Mary Elizabeth Hallock-Greenewalt, 1871-1950 (depicted)