Sources
42. Fuga

42.B.1

1 double leaf, 2° (37 × 27 cm) with 20 staves, 95 bars.
The ending is missing.
Notated in the soprano, alto, tenor, and bass clefs.
The manuscript also contains corrections in another handwriting.

Fellerer 1937b, p. 688, reproduced the first 7 bars.