[D0120AAB], Letter from Walter Seeley Mallory to Emil Herter, February 19th, 1901
https://edisondigital.rutgers.edu/document/D0120AAB
Transcription
February 19th, 1901 Mr. Herter:- Please give me two blue prints of all the re-heaters so far been made, marking the prints. First re-heater; Second re-heater and Third re-heater. I wish to send them to the Pittsburgh people. Yours very truly