Again stemming from the changing nature of TV shows when they move past the pilot stage, the offices of Sterling Cooper seem to undergo a bit of a change-around. In the pilot most of the office doors do not yet have names on them, something rectified once the show established all of its players, and office doors and various locations change as well. Its a minor issue, but one, like the appearance of Mrs Weiner, that highlights how a show changes and expands from its pilot once its picked up for a full season.