First page of autograph manuscript of Fugue in C-sharp minor, BWV 849/2 from Book 1 of the Well-Tempered Clavier. Downloaded by dezoomify tool and edited using GIMP software.
<bdi><a href="https://en.wikipedia.org/wiki/en:Johann_Sebastian_Bach" class="extiw" title="w:en:Johann Sebastian Bach"><span title="German composer (1685–1750)">Johann Sebastian Bach</span></a>
</bdi>
<a rel="nofollow" class="external text" href="https://www.bach-digital.de/receive/BachDigitalSource_source_00001361">Digitised image</a>, Berlin State Library, Bach digital archive