These papers represent the working papers and reference materials used and collected during the railway business of Mitchells, Johnston & Co.
- Ledgers concerning the railway business of Mitchells, Johnston & Co 1842-1870
- Miscellaneous documents, usually individual items relating to separate railway companies, including the Glasgow Harbour Mineral Railway , Scottish Central Railway , Stobcross Railway , Kilsyth & Falkirk Railway , Highland Railway 1846-1906
- Miscellaneous documents, usually individual items relating to separate railway companies outside of Scotland, including the Metropolitan District Railway , North Midland Railway , Great Eastern Railway , Metropolitan Railway , Great Northern Railway , East London Railway , Sheffield & Rotherham Railway , Midland Railway , Cambrian Railway , Great Central Railway , Lancashire Railway , London & Midland Grand Junction Railway 1844-1909
- Records relating to the Edinburgh & Glasgow Union canal and the Forth and Clyde Navigation 1832-1866
- Correspondence and reports 1846-1867
- Railway acts 1824-1892
- Railway legislation and trade union material 1869-1969
- Railway freight markets material 1873-1907
- Wages arbitration records 1897-1920
- Railway and canal court cases material 1835-1854
- Redundancy arrangements and publications 1966-1969
- Copies of the Railway Times 1943-1948
- Copies of the Railway News 1874-1875
- Railway plans relating to the parish of Lesmahagow 1898-1909