Rautatiehistoriaa, Heli MäkiArchived 11 May 2009 at the Wayback Machine Rail history : early history, some information on uniforms : section "Rautatieyhteys Kotkaan" (Rail link to Kotka) www.finnicakymenlaakso.fi
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Map: Tanttari, Kouvala. Industrial line branches from mark to the north, coming off the northward part of the Savonia line to Harju maps.google.co.uk
Rautatiehistoriaa, Heli MäkiArchived 11 May 2009 at the Wayback Machine Rail history : early history, some information on uniforms : section "Rautatieyhteys Kotkaan" (Rail link to Kotka) www.finnicakymenlaakso.fi