Great Northern Engineering Drawing: Shop Plan - Engine Gear, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 462, undated.

Great Northern Engineering Drawing: Shop Plan - Equalizing Gears, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 316, undated.

Great Northern Engineering Drawing: Shop Plan - Erection Diagram, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 136, undated.

Great Northern Engineering Drawing: Shop Plan - Erection Diagram, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 414, undated.

Great Northern Engineering Drawing: Shop Plan - Erection Diagram, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 417, undated.

Great Northern Engineering Drawing: Shop Plan - Erection Diagram, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 134, undated.

Great Northern Engineering Drawing: Shop Plan - Erection Diagram, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 135, undated.

Great Northern Engineering Drawing: Shop Plan - Erection Diagram, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 139, undated.

Great Northern Engineering Drawing: Shop Plan - Erection Plan, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 32, undated.

Great Northern Engineering Drawing: Shop Plan - Erection Plan, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 35, undated.