This book explores the origins of Arthur Laffer's economic theories and how they became a part of mainstream economic policy. Utilizing interviews and archival material, Laffer's life is traced from his early education through to his time working for the Nixon and Reagan administrations. Laffer's influence on Reaganomics is discussed alongside the development of supply-side economics, the shift towards neoliberal policies, and the Laffer curve. This book aims to contextualise the work of Laffer within archival research and wider economic trends. It will be relevant researchers and policy makers interested in the history of economic thought and the political economy.