'Maine is always thinking of something'

A charming and hilarious letter from E.B. White to the ASPCA, in response to their accusation that he was "harboring an unlicensed animal."
...She wears her metal license tag but I must say I don't particularly care for it, as it is in the shape of a hydrant, which seems to me a feeble gag, besides being pointless in the case of a female. It is hard to believe that any state in the Union would circulate a gag like that and make people pay money for it, but Maine is always thinking of something...