- 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 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.