John Fairbairn's books "Kamakura" and "Final Summit" on the 10 game series of Go Seigen seem to be very well received. I think you get both commentary on the game and on the historical situation around them. I remember a lot of praise for John Fairbairn's books in general, regarding game commentary.
See two other examples:
I haven't personally read them, though.
Where can I find them though? I find evidence they've been printed, but I don't see them available (just quickly searched amazon).
I've found that one a couple of years ago. Unfortunately, it doesn't provide any solution for storing the "stones" and they're rather difficult to handle too. I've used it for setting up some tesuji problems, but it's not what I'd like to carry around. The hinges don't feel very sturdy either.
As for making a 19x19 set in that size, you run into fiddliness problems when the "stones" get too small, and/or the playing surface too cramped.
I think I've discussed this with you before, so sorry if I'm rehashing our previous discussion, I don't remember what we both said before.
I'm sure something can be made as long as you're not trying to mimic standard stone shapes.
Oh, also, if you can post pictures of the set you got, I'm always interested in looking at different go sets, especially portable ones.
It's basically like the YM set that newvariant linked to, only smaller. Stones are a bit worse (the smaller they are, the worse they get, it seems), but otherwise it's the same idea.
I'll take a couple of shots and will add links here.