Queensboro Bridge, Under Construction.

[Queensboro Bridge under construction.]

[Queensboro Bridge under construction.]

Bridge, Blackwell's Island Construction.

Bridge, Blackwell's Island Construction.

Queensboro Bridge. Upper road and towers. Construction view

[Verrazano Bridge under construction.]

Trolley Under Queensboro Bridge.

[Interior of market under the Queensboro Bridge.]

Panama Canal Construction.

Queensboro Bridge. View of bridge framework from Suicide Balcony.

[Upper East Side with Queensboro Bridge and Hell Gate Bridge.]

[Verrazano Bridge under construction.]

[Verrazano Bridge under construction.]

[Queensboro Bridge.]

Queensboro Bridge. Workers repainting bridge

Queensboro Bridge. Workers repainting bridge

[Construction.]

Queensboro Bridge. Workers repainting bridge

Panama Canal Construction.