Great Northern Engineering Drawing: Shop Plan - Counterweight Parts, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 175, undated.

Great Northern Engineering Drawing: Shop Plan - Counterweight Parts, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 440, undated.

Great Northern Engineering Drawing: Shop Plan - Counterweight Parts, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 444, undated.

Great Northern Engineering Drawing: Shop Plan - Counterweight Parts, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 4 6, undated.

Great Northern Engineering Drawing: Shop Plan - Counterweight Parts, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 441, undated.

Great Northern Engineering Drawing: Shop Plan - Counterweight Parts, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 178, undated.

Great Northern Engineering Drawing: Shop Plan - Counterweight Member, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 4 1, undated.

Great Northern Engineering Drawing: Shop Plan - Counterweight Member, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 4 3, undated.

Great Northern Engineering Drawing: Shop Plan - Counterweight Member, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 438, undated.

Great Northern Engineering Drawing: Shop Plan - Counterweight Member, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 439, undated.