Great Northern Engineering Drawing: Details Frame Span - Machinery, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 487, undated.

Great Northern Engineering Drawing: Details Ballast Deck, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 28, undated.

Great Northern Engineering Drawing: Detail of Undercrossing, Bridge 7.9 - Seaview Avenue, Ballard, Washington, Line Segment 050, Milepost 7.9. Sheet 250 - 4618 - 4A, undated.

Great Northern Engineering Drawing: Design Telegraph Wire Towers, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 348, undated.

Great Northern Engineering Drawing: Design Telegraph Wire Towers, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 350, undated.

Great Northern Engineering Drawing: Design Telegraph Wire Towers, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 351, undated.

Great Northern Engineering Drawing: Design Telegraph Wire Towers, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 349, undated.

Great Northern Engineering Drawing: Design of Trusses, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 9, undated.

Great Northern Engineering Drawing: Design of Trusses, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 10, undated.

Great Northern Engineering Drawing: Design of Steel, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 5, undated.