PhD field exams from Princeton, 1981 and 1986

History of Economic Thought à la William Baumol

That's right, even four decades ago there were PhD field exams in the history of economics at Princeton. Not just anyone could teach the corresponding graduate course. It took a Baumol. https://www.irwincollier.com/princeton-history-of-economic-thought-general-exams-for-ph-d-1981-1986/