This is a correspondence between Galbraith and Friedman (first names not needed) over whether to travel the India-Pacific from Adelaide to Perth. Via Ric Holt at the SHOE list who put this in as a footnote in relation to an entirely different topic.

Milton Friedman sent Galbraith a note on February 10, 1975 saying that he was going to Australia and thinking of taking a trip “across the Australian continent on the India Pacific Railway.” He heard that Galbraith had taken the trip and wanted his advise whether it would be worth his time and effort.

To Milton Friedman
February 26, 1975
[Gstaad, Switzerland]

Dear Milton:

I think my alert office has already sent you a copy of my description of the journey. It will give you all the information you need for a decision and perhaps more. On balance, I would certainly do it.

The same mail brought a letter from Peking asking if I could arrange to send a copy of Friedman and Schwartz. The prospect for Communism is more devastating than I thought. I am also sending to the press this week a book on MONEY – WHENCE IT CAME AND WHERE IT WENT – which is rich in praise of your scholarship, more reserved on your conclusions.

Yours faithfully,
John Kenneth Galbraith

If I like anything in particular it is the civilised cordial correspondence between economists on opposite ends of the political spectrum.