I'm not really sure how I ended up with this. At some point when I was a teenager/young adult, I bought a set of these from an antique store for like $75. I just wanted one (this one, probably) and when I went to check out, she said, "This is part of a set." Little 'ol go-with-the-flow me just bought them all then for way more than I had expected to pay. I picked through them from time to time but never actually read them start to finish. And then I am almost certain I unloaded all of them, as I am wont to do.
But I have this one. And I think I snagged this one at a thrift store within the past five years or so, probably to memorialize my purchase in the past or maybe just because I was excited to buy it for, probably, $1 when I paid $75 as a, like, 17-year-old. So I have it right now, but I've yet to read it again. It's hefty! We'll see how long I hang onto this copy.