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- New York (N.Y.)--Buildings, structures, etc.2
- Skyscrapers--New York (State)--New York.2
- Buildings--Design and construction.1
- Construction workers--New York (State)--New York.1
- Empire State Building (New York, N.Y.)1
- Labor--New York (State)--New York.1
- Skyscrapers--Design and construction.1
- Skyscrapers.1
- Window cleaners (Persons)1