Nassau Electric Railroad was an electric street railway company in the U.S. state of New York. The company operated throughout the borough of Brooklyn, as well as over the Brooklyn Bridge and Williamsburg Bridge into Manhattan.
The company was formed by
real estate developer Patrick H. Flynn, who owned land on Fifth Avenue south of 25th Street, where the Atlantic Avenue Railroad's Fifth Avenue Line ended. He went to the Atlantic Avenue Railroad and Brooklyn City Rail Road, asking them to extend their lines to serve the area, but the Atlantic Avenue refused because the area was not built up, and the Brooklyn City refused because they had agreed to leave Fifth Avenue to the Atlantic Avenue. Faced with the lack of a railroad connection to his planned subdivision, Flynn incorporated the , the Coney Island, Fort Hamilton and Brooklyn Railroad , the Union Railroad , and finally the Kings County Electric Railway Nassau Electric Railroad to absorb them all.
CIFH&B was chartered by the New York State Legislature on June 7, 1890 to build from the 39th Street Ferry through New Utrecht to Coney Island and Fort Hamilton. Soon the Atlantic Avenue was also interested in extending its Fifth Avenue Line through Flynn's land to 36th Street, which it had a franchise to build to.  In 1892, Flynn took over the  Union Railroad, which had been chartered on May 6, 1884 and incorporated June 19 by other parties to connect Hamilton Ferry with Prospect Park along Union Street. Flynn's plan was to build the Union Street Line and a connection along Second Avenue to the CIFH&B, allowing the RIFH&B to reach Hamilton Ferry.  Flynn also planned to extend the Union Street Line east via  East New York to City Line. The  Kings County Electric Railway was incorporated by Flynn on November 29, 1892 to build a crosstown line from the 39th Street Ferry east along Church Avenue and New Lots Avenue to City Line, and to build from Canarsie Landing north to the city line on the west side of the Cemetery of the Evergreens, crossing the east-west line at Brownsville and the Union Street Line extension at East New York.
Flynn then incorporated the Nassau Electric Railroad on March 13, 1893 in order to raise more
capital for the system and with the right to use the tracks of the other three companies.  In the next few years, most of the system's franchised lines, totalling about 100 miles (160 km), were built: 
Flynn incorporated the East River and Atlantic Ocean Railroad on November 16, 1895 to gain access to the Brooklyn Bridge, Long Island City, and other places. However, the Nassau leased the  Atlantic Avenue Railroad on April 4, 1896, thus gaining Fifth Avenue north to the bridge, a lease on the Brooklyn, Bath and West End Railroad (West End Line), and several other lines, and the ER&A was no longer necessary. 
Canarsie Depot, at the intersection of Hegeman Avenue (Church Avenue and New Lots Avenue Lines) and Rockaway Avenue (Wilson Avenue Line), stored cars.
Brooklyn Daily Eagle, History of the Nassau Road, April 16, 1899, page 31
Brooklyn Daily Eagle, Both on Deck, February 15, 1892, page 6
Brooklyn Daily Eagle, His Fine Hand, February 16, 1892, page 6
Brooklyn Daily Eagle, Light Thrown Upon It, May 29, 1892, page 1
Brooklyn Daily Eagle, Bold Schemes, June 4, 1892, page 6
Brooklyn Daily Eagle, Pet Railroad Schemes, August 5, 1892, page 5
Brooklyn Daily Eagle, Another Surface Road, November 30, 1892, page 10
Brooklyn Daily Eagle, Flynn's Railroad Schemes, March 14, 1893, page 1
↑ McGraw Publishing Company,
McGraw Electric Railway Manual, 1908, page 206
Brooklyn Daily Eagle, New Railroad for Brooklyn and Its Suburbs, March 18, 1894, page 23
Brooklyn Daily Eagle, Flynn Wants Franchises, November 16, 1895, page 1
Brooklyn Daily Eagle, Roads to Coney Island, July 31, 1898, page 22 ↑
Brooklyn Daily Eagle, Not Nassau Franchises, December 1, 1897, page 2
Defunct New York City Transit Operators
Steam railroads later converted to rapid transit systems
Brooklyn and Brighton Beach Railroad Brooklyn, Bath and Coney Island Rail Road Brooklyn, Bath and Coney Island Railroad Brooklyn, Bath and West End Railroad Brooklyn, Flatbush and Coney Island Railway Coney Island Elevated Railway Greenwood and Coney Island Railroad Marine Railway New York and Coney Island Railroad New York and Manhattan Beach Railway New York and Sea Beach Railroad New York and Sea Beach Railway New York, Brooklyn and Manhattan Beach Railroad Prospect Park and Coney Island Railroad Sea Beach Railway Sea View Railroad
Rapid transit systems
Brooklyn-Manhattan Transit Corporation Brooklyn Rapid Transit Company Brooklyn Union Elevated Railroad Interborough Rapid Transit Company Kings County Elevated Railway
Avenue C Railroad Company Belt Line Railway Bleecker Street and Fulton Ferry Railroad Broadway and Seventh Avenue Railroad Broadway Surface Railroad Broadway Railway Company Brooklyn and North River Railroad Brooklyn & Queens Transit Corporation Brooklyn Central and Jamaica Railroad Brooklyn City Rail Road Brooklyn Crosstown Railroad Brooklyn, Queens County and Suburban Railroad Bush Terminal Railroad Bushwick Railroad Calvary Cemetery, Greenpoint and Brooklyn Railroad Central Crosstown Railroad Company
Central Park, North and East River Railroad Chambers Street and Grand Street Ferry Railroad Christopher and Tenth Street Railroad Company Columbus and Ninth Avenue Railroad Coney Island and Brooklyn Rail Road Coney Island, Fort Hamilton and Brooklyn Railroad Dry Dock, East Broadway and Battery Railroad Eighth Avenue Railroad Company Flushing and College Point Electric Railway Fort George and Eleventh Avenue Railroad Forty-Second Street and Grand Street Ferry Railroad Company Fourth Avenue Street Railway Fulton Street Railroad Grand Street and Newtown Rail Road Greenpoint and Lorimer Street Railroad Houston, West Street and Pavonia Ferry Railroad Interurban Street Railway Jamaica Central Railways Company Kings County Electric Railway Lexington Avenue and Pavonia Ferry Railroad Long Island City and Calvary Cemetery Railroad Long Island City and Maspeth Railroad Long Island City and Newtown Railway Long Island Electric Railway Manhattan and Queens Traction Company Manhattan Bridge Three Cent Line Marine Railway Maspeth Avenue and Toll Bridge Company Maspeth Railroad and Bridge Company Metropolitan Crosstown Railway Metropolitan Street Railroad Metropolitan Street Railway Nassau Electric Railroad Newtown Railway New York City Department of Plant and Structures New Williamsburgh and Flatbush Railroad New York and Harlem Railroad Company New York and North Shore Traction Company New York and Queens County Railway Company New York and Queens Transit Corporation New York City Railway Company New York Railways Company Ninth Avenue Railroad Company Park Avenue Railroad Port Richmond & Prohibition Park Electric Railroad Queensboro Bridge Railway Company Richmond County Railroad Richmond Light & Railroad Company Richmond Railways Rikers Avenue and Sanford Point Railroad Second Avenue Railroad Sixth Avenue Railroad Company South Brooklyn Street Railroad South Ferry Railroad Company Staten Island Electric Railroad Staten Island Midland Railroad Staten Island Midland Railway Staten Island Traction Company Steinway and Hunters Point Railroad Steinway Railway Corporation Third Avenue Railroad Third Avenue Railway Third Avenue Transit Corporation Thirty-fourth Street Crosstown Railway Twenty-eighth and Twenty-ninth Streets Crosstown Railroad Twenty-Third Street Railroad Company Union Railroad (Brooklyn) Union Railway Company of New York City Van Brunt Street and Erie Basin Rail Road
Affiliated Bus Transit Corporation Argus Line Transportation Corporation Avenue B & East Broadway Transit Company B&L Transportation Bilow Bus Line Brooklyn Bus Corporation Command Bus Company Comprehensive Omnibus Corporation Concourse Bus Lines Courier Bus Company Eastern Parkway, Brownsville and East New York Transit Relief Association East Side Omnibus Corporation Fifth Avenue Coach Company Fifth Avenue Coach Lines, Incorporated Flushing Heights Bus Company General Omnibus Corporation Greater Cities Bus Lines Green Bus Lines Hamilton Bus Company Independent Buses Isle Transportation Co. Jamaica Bus Line Jamaica Buses Kings Coach Company Liberty Bus Transportation Liberty Lines Express Long Island Coach Company Madison Avenue Coach Company, Incorporated Manhattan & Queens Bus Corporation Midland Coach Corporation Municipal Motorbus Company National City Bus Lines New York Bus Service New York City Department of Plant and Structures New York City Omnibus Corporation North Shore Bus Company Pioneer Bus Company Plum Beach Auto Stage Queens Auto Traction Queens Bus Corporation Queens Bus Lines Queens-Nassau Transit Lines Queens Surface Corporation Queens Transit Corporation Rauchwerger Bus Company Richmond Hill Bus Line Ruoff Brothers S&C Buses S&F Transportation Staten Island Coach Company Steinway Omnibus Corporation Steinway Transit Corporation Surface Transit, Incorporated Surface Transportation Corporation of New York Tompkins Bus Company Triangle Bus Company Triboro Coach Corporation Woodside-Astoria Transportation Company Z&M Coach Company