The letter was two years old, but last week it was must reading for most politiciansand Republicans in particular. Sent by Michigan's Governor George Romney to Barry Goldwater after the G.O.P.'s disastrous 1964 showing, it explained in twelve lucid pages just why Romney had declined to support the party's presidential ticket. Its contents were a secret until the New York Times obtained and published a copy from sources whose identity remains a mystery. Highlights:
> Stressing his conviction that neither major party should be exclusively conservative or liberal, Romney warned: "Dogmatic...