Great Northern Railway Historical Society Blueprint Collection JSBP1256, Doon, Iowa, 1947. Great Northern Blueprint Number 136-4155, Proposed Walks On Bridge Number 164.4. Section. Interstate Commerce Commission Account Number 6, Bridges, Trestles, and Culverts. Other ICC account descriptions: ICC Account Number 6, Bridge.

Great Northern Railway Historical Society Blueprint Collection JSBP1257, Doon, Iowa, undated. Water Treating Plant. 24 X 20 Plant - Sludge Floor and Piping. Authorization for Expenditure 40837. Interstate Commerce Commission Account Number 18, Water Stations. Other ICC account descriptions: ICC Account Number 18, Water Facilities.

Great Northern Blueprint Number 3A.800.2, Great Northern Foundation Plan for Water Treating Plant, 1930. Other subject categories: Drawing