A Designs Audio

A.D.A.M Audio GmbH

ACO Pacific, Inc.

AKG Acoustics

APM Press

AT&T Labs

Allen & Heath

Altec Lansing

Altec Lansing Professional

Altec Lansing Technologies

American Bell Telephone Co.

American Graphophone Co.

American Technology Corp.

Ampex Corporation

Aphex Systems, Ltd.

Ashly Audio, Inc.

Atlas Sound

Audio Developments International

Audio Devices

Audio-Technica

Automatic Phonograph Exhibition Company

BAi
Boner Associates, Inc.

Bag End Loudspeaker Systems

Bell Telephone Laboratories, Inc.

Biamp Systems

Bogen

The Celluloid Manufacturing Co.

Chicago Phonograph Manufacturing
Company

Cizek Audio Systems, Inc.

Clair Brothers Audio Systems, Inc.

Columbia College Chicago

Community
Professional Loudspeakers

Conquest Sound Company

Consolidated Talking Machine Company

Crown International

DOD

dbx, Inc.

DPA Microphones

Dan Dugan Sound Design

Dickensheets Design Associates

Deutsche Grammophon Gesellschaft

DURRELL, LLC

Earthworks Audio Products

Edison Phonograph Company

Electro-Voice

Electro Graphic Manufacturing Co.

Electronic Contracting Co.

Federal Telegraph Company

Frazier Loudspeakers

General Electric Company

Gesellschaft Fur Draht-Lose Telegraphie

Harman International

Hayden Articulating Cash Register Company

Hoffman Electronics Corporation

Hussey Electric Company

Induction Dynamics

Innovative Electronic Designs
(IED)

International Radio and Electronics Corporation

IVIE Technologies, Inc.

JBL Professional

Jaffe Acoustics, Inc.

Klipsch and Associates

Koss Corporation

LTV Ling Altec, Inc.

Lectrosonics, Inc.

LightSPEED Technologies, Inc.

Litton Systems, Inc.

Live Sound International

LynTec, Inc.

Mackenzie Labs, Inc.

Magna Electronics Co.

Michigan Magnetics

Micro Seiki Co., Ltd.

Mix Magazine

Motorola

Nortronics Company

Peavey Electronics Corporation

Phonograph Company
Orange, NJ

Presto

Primedia

Pro Sound News

Production Intercom, Inc.

Protech Audio Corporation

QSC Audio Products, Inc.

Quantegy Professional Media

Quatron Inc.

Quilter Sound Company

RDL
Radio Design Labs

RG Dynamics, Inc.

RPG Diffusor Systems

R.W. Smith

Radio Corporation of America

Rane Corporation

Rauland-Borg Corporation

Renkus-Heinz, Inc.

Roland Corporation

S.I.A.P.
Systems for Improved Acoustic Performance

STK Professional Audio

Sennheiser

Shure Incorporated

Sonic Services, Inc.

Stiernberg Consulting

Syn-Aud-Con
Synergetic Audio Concepts

Telex Communications

THAT Corporation

Trimm Radio Manufacturing Co.

U.R.E.I.
United Recording Electronics Industries

The United States Gramophone Company

The United States Phonograph Company

VCA Associates

Valley Audio, Inc.

Valley People, Inc.

Victor Talking Machine Company

Western Electric

Westinghouse Electric and Manufacturing Company

Wilms, Hermann

Wired Radio, Inc.

Z-Systems Audio Engineering

Z-Systems Audio Laboratories

Comming Soon: Index to Mid to Late 19th Century Publications