Cause and Control of the Business Cycle, 1974, by ECH.
A Current Appraisal of the Behavioral Sciences, 1973, by Rollo Handy and ECH.
Reconstruction of Economics, 1970, by ECH.
Useful Procedures of Inquiry, 1973, by Rollo Handy and ECH.
I don't agree with everything in these books, but each is worth reading. Cheapskate alert, these books are between $6 and $15 each.