Page 8: “the workmen performs” changed to “the workman performs”.
Page 64: closing quote mark inserted after ... trade along its highway.
Page 97: “enchanced his chances” changed to “enhanced his chances”.
Page 117-118 (table): minor (cosmetic) adjustments made for consistency.
Page 134: “O. H. Platte” changed to “O. H. Platt”.
Page 170: “J. C. Thirwall” changed to “J. C. Thirlwall”.
Page 175: closing quote mark inserted after ... and low first cost,
Page 208, “shown forth” changed to “shone forth”.
Page 262 (illustration caption): “TRACTOR DRAWN GRADES” changed to “TRACTOR DRAWN GRADER”.
Page 276: “(of their agents the commission men.)” changed to “(or their agents the commission men.)”.