Marxsen, Eduard. (1806-1887) Autograph Letter Signed to C. F. PetersALS of the Hamburg based composer, best known as the teacher of Johannes Brahms, to the publisher C[arl] F[riedrich] Peters (1779 1827) in Leipzig, with some interesting observations concerning copyright in the early nineteenth century. In German. Hamburg, December 5, 1836. 3 pp.; addresses of sender and recipient on fourth page together with note, "Attached is a package wrapped in yellow custom canvas : : C. F. P : : and containing manuscript sheet