The Sumner Avenue Line and New Lots Avenue Line were two streetcar lines in Brooklyn, New York City, running mainly along Marcus Garvey Boulevard (formerly Sumner Avenue), East 98th Street, and New Lots Avenue between northern Bedford–Stuyvesant and New Lots. Originally streetcar lines, the two lines were combined as a bus route in 1947. That bus route became the present B15 Marcus Garvey Boulevard / New Lots Avenue service, operated by MTA New York City Bus' East New York Depot in East New York. The B15 continues east from New Lots to John F. Kennedy International Airport in Queens. Route description The B15 bus route runs between the Woodhull Medical and Mental Health Center and Flushing Avenue () subway station in Bedford–Stuyvesant, and John F. Kennedy International Airport's Terminal 5 in Queens. Alternate buses during rush hours and weekends short turn at Drew Street/Elderts Lane on Linden Boulevard in Spring Creek, at the border with Lindenwood, Queens. The B15 bus route heads south through Bedford–Stuyvesant along Marcus Garvey Boulevard (southbound) and Lewis Avenue (northbound). After crossing Fulton Street, buses use a number of streets through Crown Heights and Ocean Hill, eventually turning south on Ralph Avenue and southeast on East 98th Street. In Brownsville and East New York, buses head east on Hegeman Avenue and New Lots Avenue, then south to Linden Boulevard and merging onto Conduit Avenue after entering Queens. B15 buses then terminate at the AirTrain JFK's Lefferts Boulevard station, within the grounds of John F. Kennedy International Airport. Between the 1990s and September 2013, the short-turn B15 Spring Creek terminus was a separate branch, directly serving the Brooklyn General Mail Facility via a turnaround loop at the north end of the facility south of Linden Boulevard. The JFK and Postal Facility branches were combined during midday and overnight hours. The loop is still served by terminating and buses, and through service to Wyckoff Heights Medical Center in Bushwick or the Gateway Center in the southern portion of Spring Creek. Originally named after abolitionist Charles Sumner, Sumner Avenue was renamed Marcus Garvey Avenue in 1987, and later Marcus Garvey Boulevard after Pan-Africanism proponent Marcus Garvey. History Sumner Avenue Line The Yates Avenue and Flatbush Railroad was organized in 1881 to build a branch of the Broadway Railroad, beginning at Broadway and Yates Avenue (present-day Marcus Garvey Boulevard) in Bedford–Stuyvesant, continuing south on Yates to Fulton Street, then east