The India Office Records( IOR), as detailed in Records below, indicate that the EIR contracted for the railway to be constructed by Messrs. Hunt and Elmsley in 1857 and the progress was extremely slow.
- Z/E/4/30/M769; “Mirzapur, Remarks upon conduct of Messrs. Hunt and Elmsley & the East Indian Railway and the Mirzapur contract”; 1857
- Z/E/4/30/M766; “Mirzapur, Railways, Report on delays in contracts in”; 1857
- “Symphony of Progress - The Saga of the Eastern Railway 1854-2003”; published by Eastern Railway, 2003; page 14
- “British Library Archives and Manuscripts Catalogue” - Search; Retrieved 2 Apr 2016