Great Northern Railway Historical Society Blueprint Collection JSBP2869, Irby, Washington, 1937. Bridges Number 326.4 and No.327. Letter. Interstate Commerce Commission Account Number 6, Bridges, Trestles, and Culverts. Other ICC account descriptions: ICC Account Number 6, Bridge.
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Taken From: "GN Locations" database compiled by Jim Chinquist, year 1950.