Great Northern Engineering Drawing: Shop Plan - Bottom Laterals, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 75, undated.

Great Northern Engineering Drawing: Shop Plan - Bottom Chord, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 199 - 2449 - 204, undated.

Great Northern Engineering Drawing: Shop Plan - Bottom Chord, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 77, undated.

Great Northern Engineering Drawing: Shop Plan - Bottom Chord, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 199 - 2449 - 201, undated.

Great Northern Engineering Drawing: Shop Plan - Bottom Chord, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 199 - 2449 - 202, undated.

Great Northern Engineering Drawing: Shop Plan - Bottom Chord, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 199 - 2449 - 205, undated.

Great Northern Engineering Drawing: Shop Plan - Bottom Chord, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 199 - 2449 - 200, undated.

Great Northern Engineering Drawing: Shop Plan - Bottom Chord, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 199 - 2449 - 203, undated.

Great Northern Engineering Drawing: Shop Plan - Bottom Chord, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 78, undated.

Great Northern Engineering Drawing: Shop Plan - Bottom Chord, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 79, undated.