Mary Elizabeth Hallock Greenewalt with light phonograph, photograph, 1920

Permanent ID:
11779
Call number:
0867
Date:
circa 1920
Inscription:
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:
Photographs
Dimensions:
Width: 20.5 cm, Height: 25.5 cm
Collection:
Mary Elizabeth Hallock Greenewalt papers
Related People or Organizations:
Wm. Shewell Ellis (photographer)
Mary Elizabeth Hallock Greenewalt, 1871-1950 (depicted)
Library of Congress Subjects:
Greenewalt, Mary Elizabeth Hallock, 1871-1950
Phonograph