Martin Horn is Associate Dean Graduate Studies and Research in the Faculty of Humanities at McMaster University. His previous publications include Britain, France and the Financing of the First World War (2002) and with Dr. Talbot Imlay, The Politics of Industrial Collaboration during World War II: Ford France, Vichy and Nazi Germany, (2014).

• List of Figures; List of Tables; Acknowledgements; Introduction; 1. 'The Heart of Contemporary Capitalism': The Partners and their Bank; 2. J.P. Morgan & Co. at home and abroad in the 1920s; 3. The Young Plan, the Bank for International Settlements and the Wall Street Crash, 1929–30; 4. 'The End of the World'? The 1931 Crises; 5. 'Witchcraft': J.P. Morgan & Co., Hoover, and the Depression in the United States, 1930–1933; 6. 'In the storm cellar': J.P. Morgan & Co. and the New Deal 1933–36; 7. J.P. Morgan & Co., and the foreign policy of the New Deal: Germany, Italy, Japan and the Nye committee, 1933–37; 8. The Coming of War and the End of the Partnership, 1937–40; Conclusion; Appendices; Bibliography; Index.

'Drawing on a comprehensive command of the archival record, this fine study places J. P. Morgan & Co. – from partnership to incorporation – firmly within the history of capitalism. All scholars of modern American and business history will benefit from this authoritative account of a pivotal firm's history.' Jason Scott Smith, author of A Concise History of the New Deal