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Autograph letter from A. W. Thayer to Fiske

Autograph letter from Rudolf Grimm to Alexander Wheelock Thayer (9 October 1869)

Autograph letter signed by Bruno Walter

Autograph letter signed by William Wallace

Autograph letter signed from A. W. Thayer to Fiske

Autograph letter signed from A. W. Thayer to J. S. Dwight

Autograph letter signed from Breitkopf & Härtel to Carl Haslinger, Jan. 14, 1864

Autograph letter signed from Breitkopf & Härtel to Carl Haslinger, January 22, 1850

Autograph letter signed from Breitkopf & Härtel to Carl Haslinger, May 25, 1864

Autograph letter signed from Breitkopf & Härtel to Haslinger, July 12 [or 22], 1861

Autograph letter signed from Emily Anderson

Autograph letter signed from George Smart to Joseph Joachim, August 14, 1859

Autograph letter signed from Hans von Bülow

Autograph letter signed from Henriette Sontag with envelope

Autograph letter signed from Ignaz Moscheles to Wilhelmine Schröder Devrient

Autograph letter signed from Joy Milane with brochure

Autograph letter signed from Jules Benedict to Henry Smart, November 4, 1845

Autograph letter signed from Myra Hess

Autograph note from Iganz von Seyfried

Autograph quote by Beethoven in hand of Carl Schuricht

Autograph sketchleaf fragment for the Elegischer Gesang and a symphony, ca. 1814

Certificate of authenticity for Beethoven's quill pen in the framed object in the Yvonne Hummel Collection (C_Hummel_001)

Certificate of authenticity for a lock of Beethoven's hair in the framed object in the Yvonne Hummel Collection (C_Hummel_001)

Certificate of authenticity for a lock of the hair of Duchess Amalia of Saxony-Weimar in the framed object in the Yvonne Hummel Collection (C_Hummel_001)

Certificate of authenticity for the lock of Goethe's hair in the framed object in the Yvonne Hummel Collection (C_Hummel_001)

Correspondence and related documents from Anton Klodner to Maria Hummel

Counterpoint autograph in the hand of Anton Reicha, with engravings of his portrait and tomb

Envelope addressed to A. W. Thayer in Vienna by J. L. Motley

Envelope containing letter from J. L. Motley to A. W. Thayer in Trieste

Envelope for a letter from Herman Grimm in Berlin to A. W. Thayer in Natick, Mass., received Dec. 16 (year unknown).

Envelope for a letter from Miss "C. M. Sedgwick, authoress" in Lennox, Mass., to A. W. Thayer in New York, dated 7 Jul (year unknown).

Envelope for a letter sent by Herman Grimm to A. W. Thayer in Berlin (September 9, 1856?)

Envelope for a letter sent by Herman Grimm to A. W. Thayer in Berlin in 1859

Envelope for a letter sent to A. W. Thayer from New Haven, Conn., on 20 July 1884, sender unknown.

Envelope for a letter sent to A. W. Thayer in Trieste from an unidentified sender in Kingston, dated July 1884

Envelope for a letter sent to A. W. Thayer in Trieste from an unidentified sender on Feb. 15, 1873

Envelope for a letter sent to A. W. Thayer in Trieste from an unknown sender in Venice in June 1865.

Envelope for a letter sent to A. W. Thayer in Trieste in June, 1865, sender unknown

Envelope for a letter sent to A. W. Thayer in Trieste, Austria, from Johns Hopkins University in Baltimore, dated 12 June 1884

Envelope for letter addressed to J. D. Whitney Jr. (year unknown; possibly 1863)

Envelope for letter sent to A. W. Thayer from Dresden to Berlin, dated 3 January 1855, sender unknown

Envelope for letter sent to A. W. Thayer in Bremen, likely from Herman Grimm, undated

Envelope for letter sent to A. W. Thayer in Cambridgeport, Mass., from New York, stamped 10 October (year unknown).

Envelope for letter sent to A. W. Thayer in Trieste from "C. L. Higginson" in Boston, dated 12 August 1887

Envelope once containing letters from Harriet Beecher Stowe to her daughter Georgiana

Grimm monument in Hanau

Letter from C. M. Sedgwick to A. W. Thayer (1865?-07-05)

Letter from Charles Lever to A. W. Thayer with invitation to dinner, dated Monday, May 4 [1868?]

Letter from F. J. Child to Justin Winsor (1884-06-10) with a note to A. W. Thayer

Letter from Herman Grimm to Alexander Wheelock Thayer (26 November 1856)

Letter from Herman Grimm to Alexander Wheelock Thayer, undated

Letter from John Lothrop Motley to A. W. Thayer (1867-01-31)

Letter from Joseph Joachim to A. W. Thayer (1891-10-20)

Letter from Julia Ward Howe to A. W. Thayer, with envelope

Letter from Nino Pontini to Gertrude Behr (1969-01-28)

Letter from Nino Pontini to Gertrude Behr (1969-02-24)

Letter from Nino Pontini to Gertrude Behr (1969-04-16)