Great Northern Blueprint Number 1256-8-7, map of Taubeneck & Mccaughey Industrial Spurs, undated. Other subject categories: Right of Way and Track Map

Great Northern Blueprint Number 1335-1-1, map of Grotto to 3 Miles West of Reiter, 1956. Other subject categories: Right of Way and Track Map

Great Northern Blueprint Number 1335-1-2, map of Milepost 1709 to 1736, near Grotto, 1956. Other subject categories: Right of Way and Track Map

Great Northern Railway Historical Society Blueprint Collection JSBP2131, Grotto, Washington, 1915. 6' X6' Reinforced Concrete Culvert. Plan, Elevation and Sections With Dimensions and Instructions. Authorization for Expenditure 25613. Interstate Commerce Commission Account Number 6, Bridges, Trestles, and Culverts. Other ICC account descriptions: ICC Account Number 6, Culvert.

Great Northern Railway Historical Society Blueprint Collection JSBP2130, Grotto, Washington, 1915. 6' X 6' Reinforced Concrete Culvert. Plan and Elevation With Dimensions. Authorization for Expenditure 25613. Interstate Commerce Commission Account Number 6, Bridges, Trestles, and Culverts. Other ICC account descriptions: ICC Account Number 6, Culvert.

AFE 953, Grotto, Washington, 1928. Permit Nw Portland Cement Company to Tap Power Line. Interstate Commerce Commission Account Number 29, Power Plants. Series II. Lines West. Other Subject Categories: Electric Operations, Catenary

AFE 89723, Grotto, Washington, 1957. Remove Money Creek Spur 3244' Long Serving Robinson Plywood Company - One Mile East. Interstate Commerce Commission Account Number 12, Track Laying and Surfacing. Cost: $2100. Series II. Lines West. Other Subject Categories: Track, Industry

AFE 87782, Grotto, Washington, 1956. Relay 363' of Team Track with Secondhand 90 # Rail. Interstate Commerce Commission Account Number 9, Rails. Series II. Lines West. Other Subject Categories: Track Maintenance, Rail