Walter Koronko worked for the Canadian Pacific Railway in the Revelstoke Division and was a member of the Brotherhood of Locomotive Firemen and Engineers. His wife, Dorothy, was a member of the Ladies Auxiliary/Society of the BLFE in Revelstoke.
The fonds consists of correspondence, CPR payroll card and train lists, ephemera relating to the Brotherhood of Locomotive Firemen and Engineers and its Ladies Auxiliary in Revelstoke, and photographs of the Koronkos, railroad engines, CPR employees, winter scenes at Revelstoke, and union members and activities.