https://archive.org/details/ModernGramophones1929
Modern Gramophones And Electrical Reproducers : Free Download, Borrow, and Streaming : Internet...
Modern gramophones and electrical reproducerswith 120 diagrams and half-tone illustrations The first serious book on the technology, techniques and equipment...
free downloadmoderngramophoneselectricalborrow
https://blogtoexpress.blogspot.com/2010/06/old-portable-gramophones.html
Blog To Express: Memories of Grandfather Gramophones
blogexpressmemoriesgrandfathergramophones
https://jessicamusic.blogspot.com/2007/10/raising-glass-at-gramophones.html
JDCMB: Raising a glass at the Gramophones
Classical music blog by journalist and author Jessica Duchen. Topics include classical music, opera, ballet, recordings, books. London, UK.
at thejdcmbraisingglassgramophones