Angus Maddison's "Monitoring the World Economy, 1820-1992" is a significant contribution to the study of global economic history. Reviewed by John R. Hanson, the book is timely given the current interest in economic globalism. As the leading scholar on the history of the world economy, Maddison provides a synthesis of available data and research on global economic trends since the Industrial Revolution. The book is welcomed as a definitive treatment, with Maddison's data often regarded as more reliable than previous standards. The book presents consistent estimates of GDP, population, and GDP per capita for fifty-six countries from 1820 to 1992, accounting for over 90% of world production. It also includes less complete series for other economic indicators. Maddison uses a wide range of sources, corrects for data discontinuities, and adjusts data for comparability. The appendices contain most of this information and are central to the book. The analysis is non-Marxist and focuses on the major forces driving long-term economic growth and development within a growing world economy. The book's data and analysis are valuable for both teaching and research, potentially increasing scholarly productivity. It stimulates research in world economic history, which, though growing, remains peripheral to the larger academic agenda. The book is a valuable resource for scholars and students interested in economic history. The review highlights the book's contributions and its significance in the field. The review is available online, and the book is licensed under a Creative Commons license.Angus Maddison's "Monitoring the World Economy, 1820-1992" is a significant contribution to the study of global economic history. Reviewed by John R. Hanson, the book is timely given the current interest in economic globalism. As the leading scholar on the history of the world economy, Maddison provides a synthesis of available data and research on global economic trends since the Industrial Revolution. The book is welcomed as a definitive treatment, with Maddison's data often regarded as more reliable than previous standards. The book presents consistent estimates of GDP, population, and GDP per capita for fifty-six countries from 1820 to 1992, accounting for over 90% of world production. It also includes less complete series for other economic indicators. Maddison uses a wide range of sources, corrects for data discontinuities, and adjusts data for comparability. The appendices contain most of this information and are central to the book. The analysis is non-Marxist and focuses on the major forces driving long-term economic growth and development within a growing world economy. The book's data and analysis are valuable for both teaching and research, potentially increasing scholarly productivity. It stimulates research in world economic history, which, though growing, remains peripheral to the larger academic agenda. The book is a valuable resource for scholars and students interested in economic history. The review highlights the book's contributions and its significance in the field. The review is available online, and the book is licensed under a Creative Commons license.