Another one, which I am fortunate to possess, is one LP in a set of five: OR-EX 71 featuring pieces by Fischer, Froberger, Kerll, Muffatt and Kolb. Very helpfully, it includes detailed registration information for each of those pieces.
There are several other recordings made at Weingarten which haven't yet been mentioned:
1. André Isoir recorded three volumes of JSB works there in Oct 1988 and 1990 on Calliope (CAL9710, CAL9715, and CAL9717).
2. Franz Raml recorded music by Justin Heinrich Knecht in Oct 1996 on MDG (MDG 614 0764-2)
3. Franz Raml recorded music by Johann Ludwig Krebs in 1999, again on MDG (MDG 614 0971-2)
4. Heinrich Hamm recorded a mixed recital in June 1986 on Audite (Audite 95.408)
5. Ludger Lohmann recorded music by Johann Heinrich Christian Rinck in Sept1996 on Naxos (Naxos 8.553925)
I don't know whether any of them is currently available.
It certainly is of interest, and when I went on Amazon just now there was one seller offering it at just over £6 incl postage (new). Can't go wrong at that price. The demo clips sounded very good so I've ordered it. Many thanks for the tip.