I don't know if anybody has commented on it before but in this episode I noticed possibly subliminal or even deliberate use of names on the buildings

'Prickley Pear Beers' on the saloon, a subtle reference to McGoohan's temperament?

Then there was the stable owners name, Ira Knight (Sein Fein champion?).

Has anybody else noticed similar signs on other buildings - either in this episode or others, like 'The Girl Who was Death?'

There were three signs in The Girl Who Was Death: David (Tomblin) Dough, Leonard (Harris) Snuffit, and Brendan (Stafford) Bull.

In addition, in Fall Out, the real estate agent sign on 6's old home in London is Lageu & Son, which comes from the set dresser's name.