Marion Cameron Gray

Marion Gray (26 March 1902 – 16 September 1979) was a Scottish mathematician who discovered a graph with 54 vertices and 81 edges while working at American Telephone & Telegraph.

[3] Her research topic was 'A boundary value problem of ordinary self-adjoint differential equations with singularities'.

In 1930 she was appointed to the post of assistant engineer at the Department of Development and Research of the American Telephone and Telegraph Company in New York.

[6] In 1934 Gray joined Bell Telephone Laboratories and remained with the company for a further 30 years until her retirement.

Gray was included in the National Library of Scotland's display "Celebrating Scottish women of science" which ran from 1 March to 30 April 2013.