Copy typewritten letter from Frederick Lanchester to Sir John B. McEwen, Royal Academy of Music, 10 June 1938
LAN/1/10/10
Item
10 June 1938
Relates to the musical scale. Viz: “There is some doubt concerning the interval of the minor seventh, as measured from the tonic, the G natural in the scale of A and the Bb in the scale of C”.
2pp.
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