Peter Groenewegen’s reputation as a chronicler of the history of economics is unparalleled. Building on his respected collection on eighteenth century economics, this new book focuses on the nineteenth and early twentieth centuries, reprinting essays on classical and modern economics. Several of the included essays have never been published before, whilst many have previously been difficult to access having been written across the 1970s, 1980s and 1990s. This important collection will be an invaluable resource for any historian, student or academic involved in the history of economics.