Great Northern Engineering Drawing: Masonry Plan, Bridge 498 - Otter Creek, north of Blythe, Montana, Line Segment 362, Milepost 190.4. Sheet 310 - 4684 - 6, undated.

Great Northern Engineering Drawing: Masonry Plan, Bridge 496 - Otter Creek, north of Blythe, Montana, Line Segment 362, Milepost 189.9. Sheet 310 - 4685 - 5, undated.

Great Northern Engineering Drawing: Deck Plan, Bridge 501 - Otter Creek, north of Blythe, Montana, Line Segment 362, Milepost 191.0. Sheet 310 - 4682 - 5, undated.

Great Northern Engineering Drawing: Deck Plan, Bridge 498 - Otter Creek, north of Blythe, Montana, Line Segment 362, Milepost 190.4. Sheet 310 - 4684 - 5, undated.

Great Northern Engineering Drawing: Deck Plan, Bridge 496 - Otter Creek, north of Blythe, Montana, Line Segment 362, Milepost 189.9. Sheet 310 - 4685 - 6, undated.

AFE, Series II, Number 69156, Blythe, Montana, July 20, 1944, Truck Unloading Chute. Located in folder 'Geyser'. Other subject categories: Stockyards. Initial cataloger's disposition code: Z, File not retained

AFE, Series II, Number 68.677, Blythe, Montana, May 23, 1968, Remove Stockyard Track. Located in folder 'Geyser'. Other subject categories: Track. Initial cataloger's disposition code: X, AFE itself not found but referenced in other documents