In the December 1968 issue of this Journal, Professors Officer and Smith question the “classical and generally accepted view of Reciprocity.” A careful reading of earlier writing on this subject casts doubt upon the novelty of their conclusions. D. C. Masters, one of their authorities, was aware of the limited effects of the Treaty. In Reciprocity, 1846-1911, he writes, “To a considerable extent the prosperity of the period, including the increase in American-colonial trade, was the result of factors other than the treaty itself.” My note raises questions about the authors' use of customs union theory (Part I) and their interpretation of the data (Part II).