At last. Nancy Marchant's "Wondrous Woven Cables" from Arans & Celtics on its owner.
(Isn't he cute?)
The yarn is "Blueberry" Jo Sharp Tweed DK wool. I slightly adapted the pattern to knit it in the round. Originally started November 6, 2004, I made rapid progress through the rest of the month. But once I started the sleeves (both at the same time, in the round on two circulars), progress became slow and halting. I would put it down for months at a time, and then later have to spend an entire evening figuring out where I was (and where I was going).
Next sweater? I've been admiring YarnHarlot's gansey.