Great Northern Engineering Drawing: Shop Plan - Bearings, Girders, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 314, undated.

Great Northern Engineering Drawing: Shop Plan - Bearings, Gears, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 318, undated.

Great Northern Engineering Drawing: Shop Plan - Bearings, Gears, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 317, undated.

Great Northern Engineering Drawing: Shop Plan - Bearings, etc., Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 69, undated.

Great Northern Engineering Drawing: Shop Plan - Bearings, Brackets, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 319, undated.

Great Northern Engineering Drawing: Shop Plan - Beam Span, Bridge 5 - 61st Street, east of Ballard, Washington, Line Segment 050, Milepost 6.8. Sheet 273 - 4627 - 15, undated.

Great Northern Engineering Drawing: Shop Plan - Air Cylinder, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 324, undated.

Great Northern Engineering Drawing: Shop Plan - Adjust Counterweight, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 413, undated.

Great Northern Engineering Drawing: Shop Plan - 34 Foot Beam Span, Bridge 5 - 61st Street, east of Ballard, Washington, Line Segment 050, Milepost 6.8. Sheet 267 - 4218 - 7, undated.

Great Northern Engineering Drawing: Shop Plan - Member and Struts, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 428, undated.