In 2018, a 1939 baseball with the signatures of 11 Hall of Famers sold for $623,369. The most valuable autograph ever sold, however, went for 15.7 times that.

Description: Journal : autograph manuscript signed : Walden [Concord], 1845 July 5-1846 Mar. 27., Thoreau, Henry David, 1817-1862., , , MA 1302.8

Massenet, Jules, 1842-1912. Thaïs. Méditation (Album leaf) . Méditation from Thaïs (album leaf) : autograph manuscript, 1901.

In this letter Potter touches on several topics including the winter weather, a pet cat, and the latest antics of Peter Rabbit. She wrote several letters to children with references to Peter and made at least three drawings of him asleep before the fire. She bought Peter in 1892, taught him tricks, took him on summer vacations, sketched him in a multitude of poses, and mourned his loss when he died in 1901: "whatever the limitations of his intellect or outward shortcomings of his fur, and his ears and toes, his disposition was uniformly amiable and his temper unfailingly sweet.

Schumann, Clara, 1819-1896, Variations on a theme by Robert Schumann (album leaf) : autograph manuscript, 1865 Oct.

Ravel, Maurice, 1875-1937. Miroirs. Oiseaux tristes . Oiseaux tristes : autograph manuscript, 1905?

Schubert, Franz, 1797-1828. Erlkönig. Erlkönig: autograph manuscript, 1815 Oct.?

Ravel, Maurice, 1875-1937. Valse; arr.. La valse, arranged for piano : autograph manuscript, 1920.

Books & Manuscripts specialist Thomas Venning on a complete autograph that reveals Bach in the moment of composition

Wagner, Richard, 1813-1883. Lohengrin. 3. Akt. 3. Szene (Sketches). Lohengrin, Act III, Scene 3 (draft): autograph manuscript, 1847?

Fauré, Gabriel, 1845-1924. Nocturnes, piano, no. 6, op. 63, D♭ major . Nocturne no. 6, op. 63, in D♭ major : autograph manuscript, 1894 Aug. 3.