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Address before the Illuminating Engineers Society on a light scoring for the Episcopal service
Address before the Illuminating Engineers Society on a light scoring for the Episcopal service
Address before the Illuminating Engineers Society on a light scoring for the Episcopal service
Address before the Illuminating Engineers Society on a light scoring for the Episcopal service
Address before the Illuminating Engineers Society on a light scoring for the Episcopal service
Address before the Illuminating Engineers Society on a light scoring for the Episcopal service
Address before the Illuminating Engineers Society on a light scoring for the Episcopal service
Address before the Illuminating Engineers Society on a light scoring for the Episcopal service
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Address before the Illuminating Engineers Society on a light scoring for the Episcopal service

Permanent ID:
11315
Date:
March 13 1923
Image Description:
Address given by Mary Elizabeth Hallock Greenwalt to the Illuminating Engineers Society regarding her invention of the color light organ, essentially a musical instrument that "plays" light instead of sound. In this speech she describes the way that she would score an Epicopal church service with the light organ, and implores the Illuminating Engineers to support her patent claims.

Image 8 is a flyer promoting the event that the Illuminating Engineers Society hosted, at which Greenwalt gave this speech.
Address:
, 1317 Spruce StPhiladelphia
Format:
Annotated Typescript
Dimensions:
Width: 21.5 cm, Height: 28 cm (case)
Collection:
Mary Elizabeth Hallock Greenewalt papers
Related People or Organizations:
Mary Elizabeth Hallock-Greenewalt, 1871-1950 (author)
Illuminating Engineering Society (Manufacturer)