R. Robertson
- Electrical Haulage at Earnock Colliery. Dans: Minutes of the Proceedings of the Institution of Civil Engineers, v. 121, n. 1895-3 ( 1895). (1895):
- Ardrossan Harbour Extensions. Dans: Minutes of the Proceedings of the Institution of Civil Engineers, v. 120, n. 1895-2 ( 1895). (1895):