Great Northern Engineering Drawing: Repairs - Stub Stringer, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 475, 1951.

Great Northern Engineering Drawing: Repairs Fastener Operator, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 373, undated.

Great Northern Engineering Drawing: Repairs, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 469, 1949.

Great Northern Engineering Drawing: Repairs, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 469A, 1949.

Great Northern Engineering Drawing: Revision Calculations - Counterweight, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449, 1948.

Great Northern Engineering Drawing: Sections - Abutment 19, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 18, 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.

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 - Adjust Counterweight, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 413, undated.