The second, in the office of the used car lot in Gorman, may not even be a map at all:
The next map is a globe, a familiar type (see the previous entry in this listing), and is here in a familiar setting, as an item in the bric-à-brac of Norman’s room. It signifies only the minimum that globes can signify when attention is not drawn to them by the film (merely pointing to a world beyond the film's locales):
This would harmonise with the view (presented by David Thomson) that the ‘psychological explanation’ is itself at some remove from exact reality -- that Hitchcock was ‘pulling our leg’.