When New York City's Mass Transit Association unveiled its first new subway map in nearly half a century earlier this year, cartographic straphangers may have simply seen the D and the F train ...

A lifelong mission to document the unique mosaics and designs of every subway station in New York City.

A topographical map of New York City from 1865 shows that the station at 28th Street and Seventh Avenue was built on marshland, with water flowing in from multiple blocks.