One feature of the Cannan edition of WON (which for example is the one issued by U.of Chicago Press in 1976 with intro by Stigler) worthy of note I think in considering assigning for class readings is the set of margin summary comments accompanying each paragraph. I have found in using the WON for a first year seminar that students tend to appreciate the margin summaries in the Cannan edition and find that it makes Smith's long sentence and paragraph structure easier to deal with. However, I have had some students indicate that they found the summaries a distraction and possibly biased their reading of the actual text. So there are pros and cons to this feature. On balance in the future, I would probably be inclined to continue with the Cannan edition due its margin summaries. David Mitch