Bell's 'Harmonic' telegraph transmitter and receiver, 1873-1874.

Chichester A Bell, American sound engineer, late 19th century.

Headstone of Alexander Graham Bell, London, 1996.

Turtle amulet, Plains Indians, USA and Canada, 1880-1920.

Glass phial containing atropine and cocaine, 1880-1920.

A male fetish figure from the Congo, central Africa, c 1880-1920.

Detail from a carved wooden divination bowl, Nigeria, 1880-1920.

Medicine or sacred bundle, Canada and USA, 1880-1920.

Yoruba ritual bowl, Nigeria, c 1880-1920.

Two cautery instruments, Ugandan, c 1880-1920.

Collection of file-cutters tools, 1880-1920.

Medicine or sacred bundle, Canada and USA, 1880-1920.