Box 14
Container
Contains 20 Collections and/or Records:
Notebook containing typed memoranda and blueprints. Entitled, Large Free-Rigged Diaphogus of Double-Conical Structure for use as loud speakers.
, 1922.
File — Box: 14, Folder: 1
Scope and Contents note
From the Series:
Notes for papers and lectures, seismic diagrams, correspondence and memoranda, and patents.
Dates:
1922.
Small notebook containing handwritten calculations. Entitled, Undamped Periodic Elastic Waves; Early notes from old LEFAX notebook.
, n.d.
File — Box: 14, Folder: 2
Scope and Contents note
From the Series:
Notes for papers and lectures, seismic diagrams, correspondence and memoranda, and patents.
Dates:
n.d.
Correspondence regarding The Bell Telephone `Colloquium.'
Includes Report on first year, 1919-20; Constitution of the Colloquium. Letter to Norman Ricker, inviting him to become a member, from the secretary, Karl K. Darrow.
, November 12, 1921.
File — Box: 14, Folder: 3
Scope and Contents note
From the Series:
Notes for papers and lectures, seismic diagrams, correspondence and memoranda, and patents.
Dates:
November 12, 1921.
Photographs of an early model of the Portable Cathode Ray Oscilloscope., 1922.
File — Box: 14, Folder: 4
Scope and Contents note
From the Series:
Notes for papers and lectures, seismic diagrams, correspondence and memoranda, and patents.
Dates:
1922.
Chart of Western Electric Company Engineering Department., 1922.
File — Box: 14, Folder: 5
Scope and Contents note
From the Series:
Notes for papers and lectures, seismic diagrams, correspondence and memoranda, and patents.
Dates:
1922.
Letter from J. W. Horton to Ricker, 5 May 1927.
File — Box: 14, Folder: 6
Scope and Contents note
From the Series:
Notes for papers and lectures, seismic diagrams, correspondence and memoranda, and patents.
Dates:
5 May 1927.
Photographs of Unidentified Machinery.
File — Box: 14, Folder: 7
Scope and Contents note
From the Series:
Notes for papers and lectures, seismic diagrams, correspondence and memoranda, and patents.
Dates:
1916-1978
Notebook containing memoranda and notes. Entitled, Ricker vs. Hibacsko; Interference 59,575: Cone Loud Speaker Development.
, 1930.
File — Box: 14, Folder: 8
Scope and Contents note
From the Series:
Notes for papers and lectures, seismic diagrams, correspondence and memoranda, and patents.
Dates:
1930.
Notebook containing a published article, Ricker et. al., Frequency Measurement in Electrical Communication,
as well as photographs., c.1923.
File — Box: 14, Folder: 9
Scope and Contents note
From the Series:
Notes for papers and lectures, seismic diagrams, correspondence and memoranda, and patents.
Dates:
c.1923.
Notebook containing handcharted graphs. Entitled, Oroginal [sic] Curves of Work on Modulations.
, 1919
File — Box: 14, Folder: 10
Scope and Contents note
From the Series:
Notes for papers and lectures, seismic diagrams, correspondence and memoranda, and patents.
Dates:
1919