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Gives the names and addresses of Dr and Mrs Ewing, specialists in aids for the deaf, and of Amplivox, from whom his wife bought her aid. Encloses a booklet about the Amplivox sets.

16 South Eaton Place, S.W.1.—Returns a document (a booklet about Amplivox hearing-aids). He and his wife have bought a set, which seems valuable, though they intend to recommend some alterations.

16 South Eaton Place, S.W.1.—Thanks him for the information about Amplivox (see 1/138). Intends to visit them and try their crystal set. His wife is also interested.