Great Northern Railway Historical Society Blueprint Collection JSBP8762, Wayzata, Minnesota, 1918. Great Northern Blueprint Number 147-12, Automatic Street Crossing Bells. Authorization for Expenditure 7875. Interstate Commerce Commission Account Number 27, Signals and Interlockers. Other ICC account descriptions: ICC Account Number 27, Signal.

Great Northern Railway Historical Society Blueprint Collection JSBP8763, Wayzata, Minnesota, 1918. Wayzata Yard Map. Showing Crossing Signals. Authorization for Expenditure 7875. Interstate Commerce Commission Account Number 27, Signals and Interlockers. Other ICC account descriptions: ICC Account Number 27, Signal.