On a related note, Geoffrey recently had an article published in the February-March edition of Perspective, the Journal of the Art Directors Guild. You can read it here (go to page 30 of the magazine, which is page 17 of the PDF).
Here is an excerpt:
"One of my first tasks for Production Designer Dan Bishop and Art Director Christopher Brown was to re-create a subway station exit in Brooklyn from which Peggy emerges after a hard day at the office. Back in 1963, there were no lettered, numbered or color-coded subway lines anywhere in New York City, just a confusing morass of IND, BMT and IRT lines that had once been run by separate companies."
In addition to hinting at the work ahead of him, this excerpt also helps me appreciate the work of Unimark International in making the much more user-friendly subway signage system that we know today.