Brooklyn Heights (New York, N.Y.)

The 2,992 Independent Subway System (IND) Route 101 photographs show construction on the Eighth Avenue Line (the A train and C train) from Greenwich Village south to Fulton Street in Manhattan, and into Brooklyn via the Cranberry Street Tunnel under the East River.

The 1,816 Contract Four, Route 33 photographs show the construction by the Brooklyn-Manhattan Transit Corporation (BMT) of the continuation of the Broadway Line from Manhattan into Brooklyn via the Montague Street Tunnel (the R train), connecting to the Fourth Avenue Line in Brooklyn.

The 1,809 Contract Three, Route 48 photographs show construction by the Interborough Rapid Transit Company (IRT) of the Brooklyn Branch of the Broadway–Seventh Avenue Line (the 2 train and 3 train) from Park Place in Manhattan to Clark Street and Borough Hall in Brooklyn. The route covers the following sections: Section 1, Park Place under City Hall Park and along Beekman Street to William Street; Section 2, William Street to Hanover Square; and Section 3, Old Slip in Manhattan to Clark Street in Brooklyn, passing under the East River via the Clark Street Tunnel.

The 2,869 Contract Two photographs show the continuation of subway construction by the Interborough Rapid Transit Company (IRT), connecting City Hall on the Lexington Avenue Line in Manhattan to Atlantic Avenue on the Eastern Parkway Line in Brooklyn via the Joralemon Street Tunnel under the East River (the 4 train and 5 train). There are many photographs of buildings along Joralemon Street in Brooklyn Heights. Other photographs show the subway being constructed beneath the elevated tracks along major arteries such as Flatbush Avenue.