April 11 – The Paris-Lyon-Méditerranée railway company (PLM) is formed in France by amalgamation of the Chemin de fer de Lyon à la Méditerranée (LM) and the Chemin de fer de Paris à Lyon (PL) companies.
June 1 – The Crumlin Viaduct is opened to the public in the UK
June 4 – The first central connection to the Mississippi River is made when the Ohio and Mississippi Railroad connects Cincinnati, Ohio, to St. Louis, Missouri.
Espitalier, T.J.; Day, W.A.J. (1943). The Locomotive in South Africa – A Brief History of Railway Development. Chapter I – The Period of the 4 ft. 8½ in. Gauge. South African Railways and Harbours Magazine, June 1943. pp. 437–440.
Web site: Erie Railroad presidents . March 15, 2005 . dead . https://web.archive.org/web/20050318171642/http://erierr.railfan.net/eriepres.html . March 18, 2005 .