Great Northern Railway Standard Signal Plan Number 167-70, Cover, Pipe 5 Inch for Train Order Signal, Pinnacle, Signal Mast, was prepared January 22, 1918.

The Great Northern Railway Standard Signal Plans is a book of standard plans of signal system components, drawn between 1905 and 1962. It was produced by the Office of Engineer Signals and Communications in Saint Paul, Minnesota.

Great Northern Railway Standard Signal Plan Number 167-118C, Connector, Track Shunt for Track Walker, was prepared September 28, 1927 and last revised on March 14, 1957.

Great Northern Railway Standard Signal Plan Number 167-25B, Connections - Switch Box, Assembly, was prepared January 2, 1924 and last revised on October 27, 1928.

Great Northern Railway Standard Signal Plan Number 167-09A, Connections - Switch Box Connections, was prepared January 19, 1922 and last revised on July 30, 1932.

Great Northern Railway Standard Signal Plan Number 167-54, Clamp, Stay, for 5 Inch and 6 Inch Pipe, Ladders, Train Order Signal, was prepared December 8, 1917.

Great Northern Railway Standard Signal Plan Number 167-57, Clamp, for 6 Inch Pipe and Base of Ground Signal, was prepared December 12, 1917.

Great Northern Railway Standard Signal Plan Number 167-73B, Clamp and Guide for Vertical Connection on Signals, was prepared January 28, 1918.

Great Northern Railway Standard Signal Plan Number 167-73A, Clamp and Guide for Vertical Connection on Signals, was prepared January 28, 1918.

Great Northern Railway Standard Signal Plan Number 167-128, Circuit Controller, End Lock, was prepared March 23, 1922.