- 1George L. Frow
The Edison disc phonographs and the diamond discs : a history with illustrations
Los Angeles (CA): Mullholland Press 2001; IX, 291 S. : Ill.
Phonograph; Geschichte - 2George L. Frow
Edison Cylinder Phonograph Companion
Woodland Hills: Stationery X-Press 1997; 426 S. : zahlr. Ill.
Phonograph