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Great Northern Authorization for Expediture (AFE) 40478, Singleshot, Montana, 1929
AFE, Series II, Number 40478, Singleshot, Montana, September 10, 1929, Snowsheds. Located in folder 'Blacktail'. Other subject categories: Tunnels. Initial cataloger's disposition code: F, File; multiple sheets in a folder
Great Northern Authorization for Expediture (AFE) 39532, Singleshot, Montana, 1929
AFE, Series II, Number 39532, Singleshot, Montana, March 27, 1929, Snowsheds. Located in folder 'Blacktail'. Other subject categories: Tunnels. Initial cataloger's disposition code: F, File; multiple sheets in a folder
Great Northern Authorization for Expediture (AFE) 31715, Singleshot, Montana, 1926
AFE, Series II, Number 31715, Singleshot, Montana, May 1, 1926, Turnout. Located in folder 'Blacktail'. Other subject categories: Track. Initial cataloger's disposition code: M, AFE Sheet page 1, with map or other paper