[LB059247], Letter from Thomas Alva Edison to Thomas Adams Woodruff, December 15th, 1896
https://edisondigital.rutgers.edu/document/LB059247
Transcription
Dec 15 96 Dr T.A. Woodruff 1102 Reliance Building Chicago. Ill Dear Sir:- In reply to your favor of the 24th ult, I beg to state that in the course of experiments I only made the observation that one blindfolded can see with the X ray. I do not want to go into the subject any further as it is out of my line. Yours truly Thos. A. Edison R[andolph]