Journal Article Usher, Introduction to the Industrial History of England Get access N. S. B. Gras N. S. B. Gras University of Minnesota Search for other works by this author on: Oxford Academic Google Scholar The Quarterly Journal of Economics, Volume 34, Issue 3, May 1920, Pages 532–537, https://doi.org/10.2307/1883365 Published: 01 May 1920