LIFE

..... January 1914, when it was demonstrated at a meeting of the in North London Phonograph and Gramophone Society on the 17th [of January] at the Claremont Hall, Clerkenwell, in the City.. This is not correct because it had already been demonstrated in March 1913 (source: Edison Phonograph. The British Connection by Frank Andrews (The City of London Phonograph and Gramophone Society, 1986)

Henry Seymour was the first person to demonstrate the Edison disc in England, before a gathering at Claremont Hall, in London in 1913 (source: From tinfoil to stereo: the acoustic years of the recording industry, 1877-1929 by Walter Leslie Welch, Leah Brodbeck Stenzel Burt, Oliver Read (p. 118))


wrote The Reproduction of Sound

Sound-reproducing accessories: [the catalogue of] Henry Seymour, 544 Caledonian Road, London, N.7. by Henry Seymour (Firm)

The Coming of the Telegraphone by Henry Seymour
The most recent ... was regarded by experts as being far superior to that of any existing phonograph,

From 1925 to 1930 Henry Seymour (Manufacturer of Talking Machines) is listed at: 544 Caledonian rd., London N.7 (British Phone Books 1925-1930