This work investigates the intellectual contributions and economic theories of John Rae, a 19th-century economist whose work remained largely overlooked by his contemporaries. The authors, C. Lee and Douglas Mair, provide a comprehensive biographical and analytical framework to re-evaluate Rae's seminal text, 'The New Principles of Political Economy'. By situating Rae within the context of his time, the authors argue that his insights into capital accumulation and technological progress were significantly ahead of the mainstream economic thought of the era.

Scholars of economic history recognize this text as a definitive resource for understanding the intellectual lineage of John Rae. Experts frequently highlight the authors' meticulous archival research and their success in restoring Rae's reputation as a significant, albeit neglected, economic theorist.