Januar 1817, Autograph https://www.beethoven.de/de/media/view/4611994057441280/Ludwig+van+Beethoven%2C+Brief+an+Karl+Peters%2C+Wien%2C+8.+Januar+1817%2C+Autograph?fromWork=5564103917568000
Januar 1817, Autograph
Januar 1817, Autograph Beethoven-Haus Bonn, Sammlung