I've been exploring exactly what it is that I found. For example, one place I look to find out what printing something is or what is being asked for a certain title is Bookfinder.

So I checked Isobel by James Oliver Curwood (New York: Grosset & Dunlap, May 1913), which I found, complete with the original dustjacket. And I actually can't find a copy listed (in four pages of listings) with the original jacket. So is it -- oooo! -- rare? But who's looking for it these days? Not many, I'd bet.

(And I'm re-posting this, because The Evil Glitch attacked my first attempt to post this, too. OK, last post of the evening then.)