One-Track Mind is a diminutive selection presented in a single neat and tidy 5x7 package. It begins with a section of Coppola’s hand drawn maps of the subways transit layout for Contract 1 (1905 Manhattan-Bronx line) and Contract 2 (1908 Brooklyn line) and ends with reproductions of a few original journal pages. In between are station drawings that range from full elevations and rooflines, to tiny railing designs, name panels, pilasters, corbels, fixtures, and more.
At six self-published volumes, and two thousand pages, “Silver Connections” was an exhaustive visual history of the underground transit system that was published in 1984 and with only 900 copies, and isn't available anywhere anymore.
Inside are Coppola’s ink sketches, with notes, of a hundred and ten stations, including meticulous keys to indicate the color of every tile.