AFE, Series II, Number 17980, Grotto, Washington, July 7, 1921, Shelter Shed. Located in folder 'Miller River'. Other subject categories: Building. Initial cataloger's disposition code: Z, File not retained

AFE, Series I, Number 14054, Grotto, Washington, March 21, 1905, Derail on Industry Track. Located in folder 'Miller River'. Other subject categories: Relay. Initial cataloger's disposition code: X, AFE itself not found but referenced in other documents

AFE, Series II, Number 12362, Grotto, Washington, February 3, 1920, Rip Rap - Grotto and Fern Bluff. Located in folder 'Miller River'. Other subject categories: Grading/Ditching/Roads/Culverts. Initial cataloger's disposition code: Z, File not retained

AFE, Series I, Number 12260, Grotto, Washington, April 25, 1906, House Track and Remove Crossover. Located in folder 'Miller River'. Other subject categories: Track. Initial cataloger's disposition code: M, AFE Sheet page 1, with map or other paper

AFE, Series I, Number 12212, Grotto, Washington, April 9, 1906, Grotto Mill Spur. Located in folder 'Miller River'. Other subject categories: Track. Initial cataloger's disposition code: M, AFE Sheet page 1, with map or other paper

AFE, Series I, Number 10612, Grotto, Washington, March 18, 1905, Remove Grotto Mill Spur. Located in folder 'Miller River'. Other subject categories: Track. Initial cataloger's disposition code: X, AFE itself not found but referenced in other documents

Burlington Northern Engineering Drawing: Deck Plan, Bridge 428 (formerly Great Northern), west of Grotto, Washington, Line Segment 037, Milepost 1738.4. Sheet 292 - 4705 - 51, 1985.