[LB062251], Letter from Thomas Alva Edison to Seed (M.A.) Dry Plate Co, February 18th, 1896
https://edisondigital.rutgers.edu/document/LB062251
Transcription
Feb 18 96 M. A. Seed Dry Plate Co'y- 2005 Lucas Place St Louis. MO. Dear Sirs:- Your favor of the 11th inst came duly to hand and in reply I beg to state that it is just what we want, experiments in Cramer plates show that the slow plates are more sensitive than the rapid to X rays. Plates most handy to us are 4” x 5” Yours truly Thos. A. Edison R[andolph].