Interactive graphics terminal at Imperial College, London, 1975.

Computer room at Imperial College, London, 1975.

Teach the Turtle interactive, Science Museum, London, 1992.

BR bronze medallion, September 1985. The

Stringfellow's 'Triplane', 1868.

Stringfellow's Flying Machine of 1868.

'Geographical Diagram of the Earth', 1846.

'The Earth's Annual Revolution Round the Sun' c 1851.

'Physical Map of the World', 1849.

'The Earth's Annual Revolution Round the Sun', 1851.

'Physical map of the World', 1849.

'The Earth's Annual Revolution Round the Sun', 1851.