Box 13
Container
Contains 1 Collection or Record:
Notebook containing blueprints. Entitled, Production of Harmonics; Development of Type `G' Carrier Telephone.
, 22 August 1921
File — Box: 13, Folder: 9
Scope and Contents note
From the Series:
Notes for papers and lectures, seismic diagrams, correspondence and memoranda, and patents.
Dates:
22 August 1921