- The 1,594 Contract Three, Route 12 photographs show construction by the Interborough Rapid Transit Company (IRT) of the Eastern Parkway Line from Downtown Brooklyn along Flatbush Avenue and Eastern Parkway to Crown Heights (the 2 train, 3 train and 4 train). The route covers the following sections: Section 1, Flatbush Avenue from Atlantic Avenue to St. Marks Avenue; Section 1A, Flatbush Avenue from Park Place to Eighth Avenue; Section 1B, the area between Fulton Street, Flatbush Avenue, and Atlantic Avenue; Section 2, Plaza Street and Eastern Parkway to Nostrand Avenue; Section 3, Eastern Parkway from Nostrand Avenue to Utica Avenue. Photographs include views of brownstones along St. Felix Street and Hanson Place near the Brooklyn Academy of Music; storefronts along Flatbush Avenue; Grand Army Plaza; the Prospect Park Reservoir located on the corner of Plaza Street and Eastern Parkway (where the main branch of the Brooklyn Public Library now stands); and many views along Eastern Parkway.
- The 634 Contract Three, Route 16 photographs show construction by the Interborough Rapid Transit Company (IRT) of the elevated Jerome Avenue Line (the 4 train) from around East 157th Street north to Woodlawn in the Bronx. The route is divided into the following sections: Section 1, River Avenue and East 157th Street to Jerome Avenue and East 182nd Street; Section 2, Jerome Avenue from East 182nd Street to Bainbridge Avenue. The photographs include views of the interiors, exteriors, and platforms of completed stations, and many photographs of the Jerome Avenue Yard at the northern end of the line.
- The 542 Contract Three, Route 18 photographs show construction by the Interborough Rapid Transit Company (IRT) of the White Plains Road Line (the 4 train and 5 train) in the Bronx from around East 179th Street to Wakefield-East 241st Street. The route covers the following sections: Section 1, from East 179th Street and Boston Road to Burke Avenue and White Plains Road, including the 180th Street Yard; Section 2, White Plains Road from Burke Avenue to East 241st Street, including the 239th Street Yard.
- The 1,486 Contract Three, Route 19-22 photographs show construction by the Interborough Rapid Transit Company (IRT) of the Pelham Line (the 6 train) in the Bronx from East 138th Street and Third Avenue to Pelham Bay Park. The route is divided into the following sections: Section 1, East 138th and Third Avenue to East 149th Street and Southern Boulevard; Section 1A , East 149th Street and Southern Boulevard to Whitlock Avenue; Section 2, Whitlock Avenue to Pelham Bay Park along Westchester Avenue; and Section 3, the Westchester Yard near the Westchester Square and Middletown Road stations. There are many photographs of the bustling commercial strip along East 138th Street, more rural scenes as the line extends farther east, and views of many subway stations along the way.
- The 40 Contract Three, Route 27 photographs show construction by the Interborough Rapid Transit Company (IRT) in the vicinity of Mott Avenue Station in the Bronx (the modern 149th Street-Grand Concourse Station on the 2 train and 5 train). There are above ground views along East 149th Street, Mott Avenue, Walton Avenue, and Spencer Place, as well as many underground views, some showing the Mott Avenue Station under construction or completed.
- The 1,143 Contract Three, Route 29 photographs show construction by the Interborough Rapid Transit Company (IRT) of the Nostrand Avenue Branch of the Brooklyn Line between Crown Heights and Flatbush, Brooklyn (the 2 train and 5 train). The route covers the following sections: Section 1, Nostrand Avenue from Eastern Parkway to Church Avenue; Section 2, Nostrand Avenue from Church Avenue to Flatbush Avenue. Views include the residential and commercial stretches of Nostrand Avenue. There are many storefronts and brownstones, and some wooden row houses and detached wood frame cottages.
- The 451 Contract Three, Route 31 photographs show the construction by the Interborough Rapid Transit Company (IRT) of the New Lots Line or Livonia Avenue Line (the 3 train) in Brooklyn. The line runs from East 98th Street and Sutter Avenue to Livonia Avenue and New Lots Avenue. Most views are of the Livonia Avenue commercial district between Howard Avenue and Van Siclen Avenue in Brownsville, a Jewish neighborhood with many shop signs written in Yiddish. Construction of the elevated line resulted in a number of class action lawsuits between property owners and the City of New York because of the very close proximity between the elevated line and the storefronts. There are also many views of the future site and construction of the Livonia Yard, located south of New Lots Avenue between Hegeman and Lawrence Avenues and Elton and Linwood Streets. The area is mainly undeveloped plots of land with a few detached frame and carriage houses.
- The 4,056 Contract Four, Route 8 photographs show the construction by the Brooklyn-Manhattan Transit Corporation (BMT) of a portion of the Canarsie Line (sometimes referred to as the 14th Street–Eastern Line) from Manhattan into Brooklyn and Queens (the L train). The route is divided into the following sections: Section 1A, West 14th Street from Eighth Avenue to Sixth Avenue; Section 1, 14th Street from Sixth Avenue to Irving Place; Section 2, East 14th Street from Irving Place to Avenue B; Section 3, East 14th Street and Avenue B in Manhattan to North 7th Street and Bedford Avenue in Brooklyn; Section 4, North 7th Street from Bedford Avenue to Metropolitan Avenue, and Metropolitan Avenue from Union Avenue to Manhattan Avenue; Section 5, Metropolitan Avenue from Manhattan Avenue to Bushwick Avenue, and Bushwick Avenue from Metropolitan Avenue to Meserole Street; Section 6-A, Bushwick Avenue from Meserole Street to Boerum Street; Section 6-B, Bushwick Avenue from Boerum Street to McKibbin Street, McKibbin Street from Bushwick Avenue to Bogart Street, and Harrison Place from Bogart Street to Varick Avenue; Section 6-C, Harrison Place from Varick Avenue to Flushing Avenue and Wyckoff Avenue, and Wyckoff Avenue from Flushing Avenue to Menahan Street; Section 6-D, Wyckoff Avenue from Menahan Street to Halsey Street; Section 6-E-1, Wyckoff Avenue from Halsey Street to Cooper Avenue in Queens; Section 6-E-2, following the Long Island Rail Road tracks from Cooper Avenue along Cemetery of the Evergreens and Trinity Cemetery to Bushwick Avenue and Aberdeen Street; Sections 6-E-Section 6-F, Bushwick Avenue and Aberdeen Street to Broadway Junction.
- The 2,860 Contract Four, Route 11 photographs show the construction by the Brooklyn-Manhattan Transit Corporation (BMT) of a portion of the Fourth Avenue Line from Flatbush Avenue to 95th street in Bay Ridge, Brooklyn (the N train and R train). The route covers the following sections: Section AE-1, Lafayette Avenue and Ashland Place, showing the area around the Brooklyn Academy of Music; Section A-1, Atlantic Avenue and Fourth Avenue to Fourth Avenue and Sackett Street; Section A-2, Fourth Avenue from Union Street to 4th Street; Section A-3, Fourth Avenue from 4th Street to 25th Street; Section A-4, Fourth Avenue from 26th Street to 41st Street; Section B-1, Fourth Avenue from 42nd Street to 61th Street; Section B-2, Fourth Avenue from 62nd Street to 86th Street; and Section B-3, Fourth Avenue from 87th Street to 95th Street. The views include some dramatic, bird's-eye shots of the excavation work that affected the neighborhoods of Park Slope, Sunset Park and Bay Ridge.
- The 566 Contract Four, Route 39 photographs show construction by the Brooklyn-Manhattan Transit Corporation (BMT) of the West End Line extension of the Fourth Avenue Line in Brooklyn from around 36th Street to Coney Island (the D train). The connection from the Fourth Avenue Line required the reconstruction of a portion of the line between 33rd Street and 38th Street. The route covers the following sections: Section 1, Fourth Avenue from 33rd Street to 38th Street, and along 38th Street to Tenth Avenue; Section 2, Tenth Avenue from 39th Street to 41st Street, New Utrecht Avenue from 41st Street to 86th Street, 86th Street from New Utrecht Avenue to Stillwell Avenue, and Stillwell Avenue to Avenue Y and the Coney Island Yard, ending up at the Coney Island-Stilwell Avenue Station. Photographs identified as "Job 467" show New Utrecht Avenue underneath the elevated tracks. Some photographs document lawsuits by property owners along the elevated portion of the line.
- The 377 Contract Four, Route 49 photographs show construction by the Brooklyn-Manhattan Transit Corporation (BMT) of the Culver Line from around Tenth Avenue and 37th Street along Gravesend Avenue (now McDonald Avenue) to Coney Island in Brooklyn (the F train). The route covers the following sections: Section 1-A, from west of Tenth Avenue between 37th Street and 38th Street to a point east of Tenth Avenue; Section 1, from east of Tenth Avenue parallel to 37th Street to Gravesend Avenue, and along Gravesend Avenue to south of Twenty-Second Avenue (now Bay Parkway); Section 2, Gravesend Avenue from Twenty-Second Avenue to Avenue X; and Section 3, from Shell Road and Avenue X to West 6th Street and Sheepshead Bay Road. The series also includes many photographs of the Coney Island Yard.
- The 198 Contract Four, Manhattan Bridge Extension photographs show construction by the Brooklyn-Manhattan Transit Corporation (BMT) of the Manhattan Bridge Branch of the Fourth Avenue Line along Flatbush Avenue in Brooklyn (the N train and Q train), including the former Myrtle Avenue Station, which was also known as the Gold Street Station.
- The 3,626 Independent Subway System (IND) Route 109 photographs show construction of a portion of the Culver Line (the F train and G train) from Jay Street to Church Avenue in Brooklyn. The route covers the following sections: Section 1, Jay Street from Nassau Street to Willoughby Street; Section 2, Jay Street from Willoughby Street to Fulton Street, and Smith Street from Fulton Street to Baltic Street; Section 2A, Smith Street from Baltic Street to around 4th Street; Section 3, Smith Street from around 4th Street to 9th Street, and 9th Street from Smith Street to Fourth Avenue; Section 4, 9th Street from Fourth Avenue to Prospect Park West; Section 5A, Prospect Park West to Bartel-Pritchard Square and Prospect Park Southwest; Section 5B, Howard Place from Prospect Park Southwest to Prospect Avenue, and Prospect Avenue to Seeley Street Viaduct; Section 6, Prospect Avenue from Seeley Street Viaduct to Fort Hamilton Parkway, and Fort Hamilton Parkway and Caton Avenue to around East 4th Street; and Section 7, from around East 4th Street to Gravesend Avenue [McDonald Avenue], and Gravesend Avenue to Church Avenue.
- The 2,853 Independent Subway System (IND) Route 110 photographs show construction of the Fulton Street Line from Fulton Street and Lafayette Avenue to Rockaway Avenue in Brooklyn (the A train and C train). The route covers the following sections: Section 1, Fulton Street from Lafayette Avenue to Washington Avenue; Section 2, Fulton Street from Washington Avenue to Nostrand Avenue; Section 3, Fulton Street from Nostrand Avenue to Troy Avenue; Section 4, Fulton Street from Troy Avenue to Ralph Avenue; Section 5, Fulton Street from Ralph Avenue to Rockaway Avenue.