Image: Charles S.L Baker, Inventor
Charles_S.L_Baker,_Inventor.jpg (292 × 410 pixels, file size: 30 KB, MIME type: image/jpeg)
Description: Black and White photograph of Charles S.L Baker, inventor of the friction heater.
Title: Charles S.L Baker, Inventor
Credit: Own work
Author: Audrey1125
Usage Terms: Creative Commons Attribution-Share Alike 4.0
License: CC BY-SA 4.0
License Link: https://creativecommons.org/licenses/by-sa/4.0
Attribution Required?: Yes
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