Edison NHS
Many people have helped contribute to these Recording Technology History web pages. The University of San Diego has provided faculty research grants for travel and research. The San Diego Historical Society has allowed access to its Research Archives and Sound Recording Collection. Archivist Tammie Bennett helped with the recording of cylinders and discs from the Society's collection January 22, 1998, and Miles Johnston from the USD Media Center provided recording expertise. Curator Greg Williams has guided me in locating pictures in the Society's enormous Photograph Collection. Sheldon Hochheiser at the AT&T Archives in Warren, New Jersey, helped locate documents and photographs during my visit August 21, 1998, investigating the work at Bell Labs 1915-1935 that created the Electrical Revolution in sound recording.
AT&T Archives
The Edison National Historic Site with the assistance of Curator Jerry Fabris, allowed me to photograph and record early Edison machines during my visit to West Orange, New Jersey, on August 24, 1998. The Smithsonian National Museum of American History allowed me to search for documents and artifacts related to the history of sound recording during my visit to Washington D. C. in June, 1999. I am grateful for the expertise provided by Smithsonian curators Elliott Sivowitch and Bill Worthington. Jan Neumann at the Center for Magnetic Recording and Research (CMRR) at the University of California San Diego campus in La Jolla, and Tony Harville at Copley Library at the University of San Diego have helped locate journals and books.

Private collectors have provided information and photos of rare and significant artifacts: Judy MacDonald
CMRR in La Jolla
and her Crosby collection, Will Chandler and the Orthophonic phonograph, Roger Bellow and the Webster wire recorder, Lee Exline and the Highway Hi-Fi, David Forbes and the Seeburg Background Music System. Many other individuals have provided information on recording technology: Don Adamson and Aldo Andreani regarding the transistor radio, Jean-Paul Agnard and Glenn Sage and Allen Koenigsberg on Edison cylinders, James Livingston and John Parncutt on magnetic recording, Margaret Fisher on radio recordings, Don Pierson and Jeroen Steenblik on videorecorders, Samuel Brylawski on the AFRS, Ken Campbell on sound film, Rofiee Harun on digital recording, Sonny Clutter on the Radiola, Tom Tyson and Edgar Villchur on loudspeaker history.

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