Body-worn hearing aid, model S1694, received by Help the Aged for their Hearing Aid Appeal, manufactured by Philips, the Netherlands, 1975-1985 Body-worn hearing aid
Behind ear hearing aid, model 580 PC, received by Help the Aged for their Hearing Aid Appeal. Manufactured by Oticon International A/S, Denmark, 1980-1990 Behind ear hearing aid
Spare ear mould for use with a behind ear hearing aid, model 580 PC, received by Help the Aged for their Hearing Aid Appeal. Manufactured by Oticon International A/S, Denmark, 1980-1990 Spare ear mould for behind ear hearing aid, model 580 PC
Hearing aid with instructions for use, in original box, by Oticon, Denmark, 1960-1970. Hearing aid with instructions for use in original box
Two prototype tonometers for teaching speech intonation to the deaf, c. 1955 Two prototype tonometers for teaching speech intonation to the deaf
Book of illustration for teaching deaf and dumb, by Robert Kinniburgh, published by William Oliphant, Edinburgh, 1820 Book of illustration for teaching deaf and dumb