Great Northern Blueprint Number 1305-1-3, map of "P" Line Revision of Main Line Bolton to Coram Station 2472 to 2745 0.0 % Grade, undated. Other subject categories: Right of Way and Track Map

Great Northern Blueprint Number 1268-28-1, map of Belton-Silvertip Exhibit 'A' Montana Highway Department Land Required, 1946. Other subject categories: Right of Way and Track Map

Great Northern Blueprint Number 1348-40, map of Revisions and Line Changes between Belton and Coram (also Bluebrint), 1912. Other subject categories: Right of Way and Track Map

Great Northern Blueprint Number 1624-9-6, map of Amended Survey and Location Belton to Red Eagle, 1965. Other subject categories: Filing Map