The symposium features seven papers on recent developments in the scholarly literature about Cambridge economist Piero Sraffa (1898–1983). Among the topics are documents of Sraffa at the Archivio Centrale dello Stato and the Archivio Storico Diplomatico, friendship and intellectual intercourse between Sraffa and Wittgenstein: a timeline, and Sraffa on the open versus closed systems distinction and causality. The general essays cover the Great Depression and macroeconomics reconsidered: the impact of policy and real-world events on economic doctrines, and two-population social cycle theories. A final section presents four reviews of Thomas C. Leonard's Illiberal Reformers: Race, Eugenics, and American Economics in the Progressive Era, and a response from him.

• VOLUME INTRODUCTIONPART I: A SYMPOSIUM ON NEW DIRECTIONS IN SRAFFA SCHOLARSHIPSYMPOSIUM INTRODUCTION; Riccardo Bellofiore and Scott CarterSYMPOSIUM INTRODUCTION APPENDIXDOCUMENTS ON PIERO SRAFFA AT THE ARCHIVIO CENTRALE DELLO STATO AND AT THE ARCHIVIO STORICO DIPLOMATICO; Eleonora Lattanzi and Nerio NaldiFRIENDSHIP AND INTELLECTUAL INTERCOURSE BETWEEN SRAFFA AND WITTGENSTEIN: A TIMELINE; Lucia MorraSRAFFA'S 1920S CRITIQUE AND ITS RELEVANCE FOR THE ASSESSMENT OF MAINSTREAM MICROECONOMICS; Gabriel Brondino and Andrés LazzariniSRAFFA ON THE OPEN VS. ‘CLOSED SYSTEMS’ DISTINCTION AND CAUSALITY; John B. DavisTHE IMPROBABILITY OF RESWITCHING, THE CERTAINTY OF WICKSELL-EFFECTS AND THE POVERTY OF PRODUCTION FUNCTIONS: THE CAMBRIDGE CRITIQUE OF CAPITAL TRANSFORMED; Bertram SchefoldSRAFFA, THE CONFIGURATION OF EXCHANGE, AND VALUE/PRICE EXPRESSIONS OF LABOUR TIME IN SURPLUS-PRODUCING TRIANGULAR TRADE; Scott CarterPART II: ESSAYSTHE GREAT DEPRESSION AND MACROECONOMICS RECONSIDERED: THE IMPACT OF POLICY AND REAL-WORLD EVENTS ON ECONOMIC DOCTRINES; Masazumi WakatabeTWO-POPULATION SOCIAL CYCLE THEORIES; Gene Callahan and Andreas HoffmanPART III: REVIEWSA COLLECTION OF BOOK REVIEWS OF THOMAS C. LEONARD'S ILLIBERAL REFORMERS, INCLUDING A RESPONSE FROM THE AUTHORNOT ALL IL-LIBERAL: ACADEMIC REFORM THOUGHT IN THE LONG PROGRESSIVE ERA; Mary O. FurnerILLIBERAL AMERICA: RETHINKING THE PROGRESSIVE ERA IN THE AGE OF OBAMA AND TRUMP; Matthew Frye JacobsonREFLECTIONS ON THOMAS C. LEONARD'S ILLIBERAL REFORMERS; Charles R. McCann, Jr. FAITH AS POLITICAL EPISTEMOLOGY: A REVIEW OF THOMAS C. LEONARD'S ILLIBERAL REFORMERS; Scott ScheallRESPONSE; Thomas C. Leonard

The symposium features seven papers on recent developments in the scholarly literature about Cambridge economist Piero Sraffa (1898–1983). Among the topics are documents of Sraffa at the Archivio Centrale dello Stato and the Archivio Storico Diplomatico, friendship and intellectual intercourse between Sraffa and Wittgenstein: a timeline, and Sraffa on the open versus closed systems distinction and causality. The general essays cover the Great Depression and macroeconomics reconsidered: the impact of policy and real-world events on economic doctrines, and two-population social cycle theories. A final section presents four reviews of Thomas C. Leonard's Illiberal Reformers: Race, Eugenics, and American Economics in the Progressive Era, and a response from him.

• VOLUME INTRODUCTIONPART I: A SYMPOSIUM ON NEW DIRECTIONS IN SRAFFA SCHOLARSHIPSYMPOSIUM INTRODUCTION; Riccardo Bellofiore and Scott CarterSYMPOSIUM INTRODUCTION APPENDIXDOCUMENTS ON PIERO SRAFFA AT THE ARCHIVIO CENTRALE DELLO STATO AND AT THE ARCHIVIO STORICO DIPLOMATICO; Eleonora Lattanzi and Nerio NaldiFRIENDSHIP AND INTELLECTUAL INTERCOURSE BETWEEN SRAFFA AND WITTGENSTEIN: A TIMELINE; Lucia MorraSRAFFA'S 1920S CRITIQUE AND ITS RELEVANCE FOR THE ASSESSMENT OF MAINSTREAM MICROECONOMICS; Gabriel Brondino and Andrés LazzariniSRAFFA ON THE OPEN VS. ‘CLOSED SYSTEMS’ DISTINCTION AND CAUSALITY; John B. DavisTHE IMPROBABILITY OF RESWITCHING, THE CERTAINTY OF WICKSELL-EFFECTS AND THE POVERTY OF PRODUCTION FUNCTIONS: THE CAMBRIDGE CRITIQUE OF CAPITAL TRANSFORMED; Bertram SchefoldSRAFFA, THE CONFIGURATION OF EXCHANGE, AND VALUE/PRICE EXPRESSIONS OF LABOUR TIME IN SURPLUS-PRODUCING TRIANGULAR TRADE; Scott CarterPART II: ESSAYSTHE GREAT DEPRESSION AND MACROECONOMICS RECONSIDERED: THE IMPACT OF POLICY AND REAL-WORLD EVENTS ON ECONOMIC DOCTRINES; Masazumi WakatabeTWO-POPULATION SOCIAL CYCLE THEORIES; Gene Callahan and Andreas HoffmanPART III: REVIEWSA COLLECTION OF BOOK REVIEWS OF THOMAS C. LEONARD'S ILLIBERAL REFORMERS, INCLUDING A RESPONSE FROM THE AUTHORNOT ALL IL-LIBERAL: ACADEMIC REFORM THOUGHT IN THE LONG PROGRESSIVE ERA; Mary O. FurnerILLIBERAL AMERICA: RETHINKING THE PROGRESSIVE ERA IN THE AGE OF OBAMA AND TRUMP; Matthew Frye JacobsonREFLECTIONS ON THOMAS C. LEONARD'S ILLIBERAL REFORMERS; Charles R. McCann, Jr. FAITH AS POLITICAL EPISTEMOLOGY: A REVIEW OF THOMAS C. LEONARD'S ILLIBERAL REFORMERS; Scott ScheallRESPONSE; Thomas C. Leonard

The symposium features seven papers on recent developments in the scholarly literature about Cambridge economist Piero Sraffa (1898–1983). Among the topics are documents of Sraffa at the Archivio Centrale dello Stato and the Archivio Storico Diplomatico, friendship and intellectual intercourse between Sraffa and Wittgenstein: a timeline, and Sraffa on the open versus closed systems distinction and causality. The general essays cover the Great Depression and macroeconomics reconsidered: the impact of policy and real-world events on economic doctrines, and two-population social cycle theories. A final section presents four reviews of Thomas C. Leonard's Illiberal Reformers: Race, Eugenics, and American Economics in the Progressive Era, and a response from him.

• VOLUME INTRODUCTIONPART I: A SYMPOSIUM ON NEW DIRECTIONS IN SRAFFA SCHOLARSHIPSYMPOSIUM INTRODUCTION; Riccardo Bellofiore and Scott CarterSYMPOSIUM INTRODUCTION APPENDIXDOCUMENTS ON PIERO SRAFFA AT THE ARCHIVIO CENTRALE DELLO STATO AND AT THE ARCHIVIO STORICO DIPLOMATICO; Eleonora Lattanzi and Nerio NaldiFRIENDSHIP AND INTELLECTUAL INTERCOURSE BETWEEN SRAFFA AND WITTGENSTEIN: A TIMELINE; Lucia MorraSRAFFA'S 1920S CRITIQUE AND ITS RELEVANCE FOR THE ASSESSMENT OF MAINSTREAM MICROECONOMICS; Gabriel Brondino and Andrés LazzariniSRAFFA ON THE OPEN VS. ‘CLOSED SYSTEMS’ DISTINCTION AND CAUSALITY; John B. DavisTHE IMPROBABILITY OF RESWITCHING, THE CERTAINTY OF WICKSELL-EFFECTS AND THE POVERTY OF PRODUCTION FUNCTIONS: THE CAMBRIDGE CRITIQUE OF CAPITAL TRANSFORMED; Bertram SchefoldSRAFFA, THE CONFIGURATION OF EXCHANGE, AND VALUE/PRICE EXPRESSIONS OF LABOUR TIME IN SURPLUS-PRODUCING TRIANGULAR TRADE; Scott CarterPART II: ESSAYSTHE GREAT DEPRESSION AND MACROECONOMICS RECONSIDERED: THE IMPACT OF POLICY AND REAL-WORLD EVENTS ON ECONOMIC DOCTRINES; Masazumi WakatabeTWO-POPULATION SOCIAL CYCLE THEORIES; Gene Callahan and Andreas HoffmanPART III: REVIEWSA COLLECTION OF BOOK REVIEWS OF THOMAS C. LEONARD'S ILLIBERAL REFORMERS, INCLUDING A RESPONSE FROM THE AUTHORNOT ALL IL-LIBERAL: ACADEMIC REFORM THOUGHT IN THE LONG PROGRESSIVE ERA; Mary O. FurnerILLIBERAL AMERICA: RETHINKING THE PROGRESSIVE ERA IN THE AGE OF OBAMA AND TRUMP; Matthew Frye JacobsonREFLECTIONS ON THOMAS C. LEONARD'S ILLIBERAL REFORMERS; Charles R. McCann, Jr. FAITH AS POLITICAL EPISTEMOLOGY: A REVIEW OF THOMAS C. LEONARD'S ILLIBERAL REFORMERS; Scott ScheallRESPONSE; Thomas C. Leonard