1948
Columbia Introduces the “Long Playing” (LP) Record
1948
Ampex Corporation Introduces Tape Recorders
1945
Tony Schwartz Buys His First Recorder, Runs on Battery Power
1944
BBC Begins Using EMI “Midget” Portable Tape Recorder
1942
Helmut Kruger Makes First Stereo Tape Recordings
1942
AEG Magnetophon Patents Stereo Recorder in Germany
1934
BBC Radio Program Lawrence Gilliam's 'Opping 'Oliday Uses Field (Non-Studio) Recording
1932
W. Bartlett Jones Secures Patent For Stereophonic Recording
1928
Arthur Allen & Peter Paul Kellogg Record Bird Sounds Using the Movietone
1922
Major General George Owen Squier Founds Wired Radio Inc.