Northern Pacific Engineering Drawing: Motor Car House at Columbus, Montana, prepared in 1963. Burlington Northern File Number 5097, Reference Number 10111, Sheet 001.

Northern Pacific Engineering Drawing: Plan of Abutments, Bridge 41 (50) - Kaiser Creek, west of Columbus, Montana, Line Segment 041, Milepost 41.2. Sheet 441 - 47, undated.

Northern Pacific Engineering Drawing: General Plan/Masonry/Tie, Bridge 48 (070), west of Columbus, Montana, Line Segment 041, Milepost 48.9. Sheet 787 - 49, 1909. Note: 3 - span steel bridge

Northern Pacific Engineering Drawing: General Plan/Detail Abutment, Bridge 41 (50) - Kaiser Creek, west of Columbus, Montana, Line Segment 041, Milepost 41.2. Sheet 441 - 47, 1909.

Northern Pacific Engineering Drawing: Add Safety Walk, Bridge 41 (50) - Kaiser Creek, west of Columbus, Montana, Line Segment 041, Milepost 41.2. Sheet 441 - 47, undated.