Modern women-only train cars, most famously in Japan, were introduced in the early 20th century ... women to vote in the United States. New York City's subway was only five years old at the ...

There are no business-class subway cars ... But these images underscore how much of the city can be read in its mass-transit system. As the 20th century opened, New York was an industrial crucible ...

Since the early 1900s, NYC's subway system has become an iconic feature of the city. These photos show what the ... towards the end of the 19th century, they went from being at street level ...

Commuting on the subway ... of New York City life since the early 20th century. Its early days saw much integration and expansion, shaping what the system is like today. Vintage photos show ...

Welcome to Subway 101, a new series in which we attempt to demystify the complex, enormous, and often-frustrating New York City ... car models on the tracks over the course of the 20th century.