E. Hopkinson
- Electrical Railways: the City and South London Railway. Dans: Minutes of the Proceedings of the Institution of Civil Engineers, v. 112, n. 1893-2 ( 1893). (1893):
- Electrical Tramways: the Bessbrook and Newry Tramway. Dans: Minutes of the Proceedings of the Institution of Civil Engineers, v. 91, n. 1888-1 ( 1888). (1888):