Buonaparte2d's post above has suddenly triggered something way deep in my memory, but I also confess that earlier I did not properly pay attention to this thread and didn't pick up on a key point made note of above.
I have some sort of military language training material for not only Japanese, but also for the Korean language.
If there is any connection with this Naganuma Method that seems to be the key here I am not sure, but the material I have is from a fair number of years ago.
One very big problem, though, is I have no clue where they are located. Well, a clue, but probably buried deep with all sorts of other stuff. Unfortunately, I have all sorts of stuff I have saved over the years, to include some very old records and some of those are some famous Japanese group of ladies I once saw an article about and I suppose those records are also something somebody wouldn't mind having in their own collection.
But with regard to what I have I can hardly use the word "collection" in the sense that I know what I am doing and what I have, because in my case it isn't like that. I simply keep things and make sure they are neatly wrapped up and safely stored into a foot locker --- speaking of the military, the old foot lockers are some seriously strong boxes --- anyway, I just stash the stuff away and then - poof - out of my memory; until something triggers something way deep in my old brain and I realize I probably have this or that.
I have a huge "collection" of stamps and some of them are seriously old by now, but they are not properly organized like we see them folks in them movies with their fancy little tweezer things.
Anyway, I will place a card overhead with a few others already there about the old military language training stuff and at some point in the not too distant future I can check on that.
I seem to remember some sort of odd machine we used to have in the MOS libraries that could produce images or even film type training stuff and with sound and I think that also was used for language training. I had OIC duty for a bit of an MOS library and that is the only reason I remember that, but I wasn't the technician person for that system.
On another topic that popped up above; Buntaro, I don't remember exactly when JNR became JR, but I remember it was a fair number of years ago --- but I have a question for you: Do you remember when the tickets were clipped with a little design cut out of a ticket? I seem to remember a different design/shape would be cut out at different stations. I'd bet that I still have some tickets from back then. For some reason I used to buy double tickets and then keep the one that was clipped and give the one that wasn't clipped to the fella at the exit, if they even paid attention; which many times during rush hours they simply couldn't keep up with all the tickets and you just tossed the ticket into a pile or maybe a bucket thing, or something.
And even now there are stations out in the country where there is nobody watching anything, except at some there might be an attendant on duty only during the busiest times.
Or the diesel powered locomotives, like the Hachiko Line that went through Yokota Air Base. Yep, right through the facility. I think it still does. But they converted it to electric about thirty years ago. Well, maybe 25 or so years ago. Can't remember that detail, either.
Okay, back to that language training material --- I'll check that in the not too distant future, folks. We had some of that sort of stuff at the embassy, too. I only just remembered that as I was typing here. If them docs would quite pumping all those chemicals into my system I'd bet my brain would work a little better. Of course, if they didn't do that my brain wouldn't be working at all, so I better not complain, eh?