D-LEm Becker III.8.6
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D-LEm Becker III.8.6 is a manuscript at Leipziger Städitsche Bibliotheken. It contains the Praeludium in F-sharp minor by Dietrich Buxtehude.
References
Beckmann, Klaus (editor), D. Buxtehude: Sämtliche Orgelwerke. Wiesbaden: Breitkopf & Härtel, 1997. Source V2 (the signature is written Ms. III.8.6)
Online facsimile: sachsen.digital, accessed 13 August, 2023.