An engineering drawing of a railroad structure or device used for signaling.
Engineering drawings providing the form and dimensions of railroad structures such as bridges, tunnels and depots.
Great Northern Railway Standard Signal Plan Number 167-32J, Wood Fillers End Post - Shoe Angle With Plate, was prepared November 17, 1925.
Great Northern Railway Standard Signal Plan Number 167-145, Washer Plate, was prepared in February 1944.
Great Northern Railway Standard Signal Plan Number 167-78, Wall Cover Plate, for Train Order Signal, was prepared February 25, 1918.
Great Northern Railway Standard Signal Plan Number 167-11A, Trunking and Capping, was prepared April 30, 1917.
Great Northern Railway Standard Signal Plan Number 167-11C, Trunking - Groved, was prepared December 13, 1923.
Great Northern Railway Standard Signal Plan Number 167-59, Train Order Signal, Two Lever Wall Machine, was prepared January 9, 1918.
Great Northern Railway Standard Signal Plan Number 167-48B, Train Order Signal - Location Number 2, was prepared December 31, 1917.
Great Northern Railway Standard Signal Plan Number 167-48A, Train Order Signal - Location Number 1, was prepared December 28, 1917.