Great Northern Technical Drawing 1219-21-16, Short Angle Bar for 80, 75, and 77 1/2 pound rail, 1904. Other subject categories: Drawing

Great Northern Technical Drawing 1219-21-17, Short Angle Bar for 75 and 66 1/2 pound rail, 1904. Other subject categories: Drawing

Great Northern Technical Drawing 1219-21-18, Short Angle Bar for 80, 75 and 77 1/2 pound rail, 1905. Other subject categories: Drawing

Great Northern Technical Drawing 1219-21-4, Angle Bar for 60, 68 and 75 pound rail, 1905. Other subject categories: Drawing

Great Northern Blueprint Number 1213-26, Number 15 Spring Rail Frog, 1906. Other subject categories: Drawing

Great Northern Blueprint Number 1254-1-1 , Great Northern Standard Pipe Connected Derail, 1906. Other subject categories: Drawing

Great Northern Blueprint Number 1214-21-1, Number 11 Bolted Rigid Frog, 1906. Other subject categories: Drawing

Great Northern Blueprint Number 1254-30, Great Northern Tie Spacing on Main Lines, 1906. Other subject categories: Drawing

Great Northern Blueprint Number 1240-1-4, Great Northern Plan of Number 9 Turnout, 1906. Other subject categories: Drawing

Great Northern Blueprint Number 1214-21-6, Number 11 Spring Rail Frog, 1906. Other subject categories: Drawing