1911 Encyclopædia Britannica, Volume 4… (1911)
“ There is an elevated road whose trains, like the surface cars, are accommodated in the centre of the city by the subway. All the various roads—surface, elevated (about 7 m., built 1896–1901) , and subway—are controlled, almost wholly, by one company. They all connect and interchange passengers freely; so that the ordinary American five-cent fare enables a passenger to travel between almost any two points over an area of 100 sq. m. The two huge steam-railway stations of the Boston & Maine and the Boston & Albany systems also deserve mention. ”
