Operating theatre, St George's Hospital, London, c 1979.

Operating a switchboard, 1951.

Operating theatre, St George's Hospital, London, c 1979.

J A Ratcliffe, President of the Physical Society.

A W Reinold, President of the Physical Society.

The Duchess of York presenting a shield to paramedics, 15 May 1931.

Trade society membership certificate, late 19th Century.

Edward Hinks, President of the Society for Analytical Chemistry, 1928-1929.

Radio operator on board a ship, 1940s.

White silk timetable for the South Eastern Railway, March 1863.

Queen Elizabeth visiting children in hospital, London, 13 October 1938.

New traffic signals in operation, Oxford Street, London, 5 July 1931.