'A Plan of the Darlington Railway with part of the County of Durham'. Robert Stephenson. 1819. Scale 1" 3m. Original hand-drawn and -coloured plan by Stephenson, made after his survey of the proposed Stockton and Darlington Railway in Feb 1819. The plan belonged to Francis Mewburn, the company's first solicitor and the first railway solicitor in the world, and it bears a note in ink in his hand: 'The Railway here described was mater[iall]y altered in 1821'. The map shows a line from Stockton to Darlington, continuing to West Auckland and Witton Park. The first Act for the line was obtained 19 April 1821, the works were begun 13 May, the first rail was laid 22 May 1822 and the line was opened 27 September 1825.