to be employed. Bach's is part of the Scheide Library at Princeton University Library. It contains several corrections by Bach, but misses the title page and the first page of music. Kunst der Fuge In preparation for print when the composer died (1750): The Art of Fugue, BWV 1080. The printed versions (1751 and 1752) contain BWV 668a, a variant of the chorale prelude "Wenn wir in höchsten Nöten sein", BWV 668. Further reading References Sources Music prints – facsimile: Mus. 11495 R at Berlin State Library (D-B Mus. 11495 at Bach Digital website). . . . . . – facsimiles: D-LEb Peters PM 1402 at Bach Digital website; Kenny 2274 at Baldwin Wallace University; 2 B122p 1731 at Juilliard School; Mus.2405.T.46 at SLUB. – facsimile (2nd printing, ): DMS 224676(2) at Berlin State Library (D-B DMS 224676 (2) Rara at Bach Digital website). – facsimiles: D-LEb Peters PM 1403 and US-PRu M 3.1. B2 C5. 1739q (Ex.) at Bach Digital website; SA.82.F.15 at Austrian National Library (A-Wn SA.82.F.15 at Bach Digital website). – facsimiles: MS-17669 at Gallica (, ); D-LEb Peters PM 1400 at Bach Digital website; Kenny 548 at Baldwin Wallace University. Facsimile: MS64460-4° R/XVIII/Bach/2 at Austrian National Library (A-Wn MS 64460 at Bach Digital website). – facsimiles: Am.B. 80 at Berlin State Library; M3.3 .B118v at University of Rochester; Kenny 1512 at Baldwin Wallace University; mu 6406.1830 H. & Fr. Rungs Musik-Arkiv No 1535, U 20 and mu 6407.2832 Weyses Samling, U 20 at Royal Library, Denmark; Ohki N-7 (4) at Nanki Music Library, Tokyo. – facsimiles: Am.B 73 at Berlin State Library (D-B Am.B 73, Fascicle 1 and Fascicle 2 at Bach Digital website); Am.B 74 at Berlin State Library (D-B Am.B 74 at Bach Digital website); BWV 1079 at Baldwin Wallace University. – facsimiles: D-LEb Peters PM 5694 at Bach Digital website; DMS O. 80758 at Berlin State Library (D-B DMS O. 80758 Rara at Bach Digital website); SH.J.S.Bach.40 at Austrian National Library (A-Wn SH J. S. Bach 40 at Bach Digital website). (first edition, 1751) and (second edition, with preface by Marpurg, 1752) – facsimiles: mu 6406.2030 H. & Fr. Rungs Musik-Arkiv No 226A, U 315 at Royal Library, Denmark (1751 edition, DK-Kk mu 6406.2030 H. & Fr. Rungs Musik-Arkiv No 226A, U 315 at Bach Digital website); Mus. O. 17364 at Berlin State Library (1752 edition, D-B Mus. O. 17364 Rara at Bach