Great Northern Engineering Drawing: Trainmen's Walk, Bridge 423, west of Hinsdale, Montana, Line Segment 035, Milepost 303.0. Sheet 223 - 2803 - 2, undated.

Great Northern Engineering Drawing: Trainmen's Walk, Bridge 450, west of Snohomish, Washington, Line Segment 037, Milepost 1777.0. Sheet 264 - 4143 - 5, 1929.

Great Northern Engineering Drawing: Trainmen's Walk, Bridge 455, east of Snohomish, Washington, Line Segment 037, Milepost 1775.0. Sheet 201 - 4135 - 54, undated.

Great Northern Engineering Drawing: Trainmen's Walk, Bridge 544, west of Zurich, Montana, Line Segment 035, Milepost 398.8. Sheet 223 - 3661 - 5, undated.

Great Northern Engineering Drawing: Trainmen's Walk, Bridge 544, west of Zurich, Montana, Line Segment 035, Milepost 398.8. Sheet 223 - 3661 - 3, undated.

Great Northern Engineering Drawing: Trainmen's Walk, Bridge 59.8 - Trestle, north of Pateros, Washington, Line Segment 387, Milepost 59.8. Sheet 218 - 2351 - 6, undated.

Great Northern Engineering Drawing: Trainmen's Walk, Bridge 63.2 - Highway Underpass, west of Lupfer, Montana, Line Segment 036, Milepost 1235.86. Sheet 272 - 4960 - 8, undated.

Great Northern Engineering Drawing: Trainmen's Walks, Bridge 567, west of Lohman, Montana, Line Segment 035, Milepost 417.6. Sheet 223 - 3439 - 4, undated.