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WSLB 118 Handwritten letter from Schenker to Hertzka (UE), date June 4, 1912
 Schenker urges Hertzka to contact Dr. Harpner in connection with the planned
        Organization. He reiterates his demands regarding payment for the planned last five
        Beethoven sonata edition, specifying the sums, and disputes Hertzka's
        counterargument. 
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BNba 304g, [1] Handwritten letter from Schenker to F. A. Schmidt (Beethoven-Haus), dated November 27,
    1913
 Schenker asks the Beethoven-Haus to prepare and supply him with photographs of
    the autograph manuscript of the first movement of Beethoven's Piano Sonata in C minor, Op. 111,
    and announces the publication of his Erläuterungsausgabe of Op. 109 and monograph on Beethoven's
    Ninth Symphony. 
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OJ 10/1, [5] Handwritten letter from Dahms to Schenker, dated June 26, 1914
 Dahms inquires after Schenker's study of Op. 110, and hopes to review it. He is
    sure there will come a day when Schenker's work is fully appreciated. 
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OJ 15/16, [22] Handwritten letter from Weisse to Schenker, dated July 7, 1914
 Weisse reports that he is engrossed in reading Jean-Paul, is resting, practising
    piano, and studying Brahms's Second Symphony. 
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OJ 12/9, [10] Typewritten letter from Karpath to Schenker, dated November 21, 1914
 Karpath describes his editorial policy for the periodical Der Merker and asks
        Schenker for contributions. 
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OJ 10/1, [7] Handwritten field postcard from Dahms to Schenker, dated April 5, 1915
 Dahms has been conscripted and writes from the battle front. He has submitted an
    article on Schenker's edition of Op. 110. 
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WSLB-Hds 95654 Handwritten letter from Schenker to Seligmann, dated July 24, 1916
 Schenker tells Seligmann that he has arranged for copies of his critical
        editions of Beethoven’s Op. 110 and Op. 111 to be sent to him. He speaks of the positive
        interest his works have received in Germany, and about Hugo Riemann asking him to provide
        autobiographical material for an entry in the next edition of his music
        lexicon. 
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OJ 14/23, [18] Handwritten lettercard from Seligmann to Schenker, postmarked August 1, 1916
 Seligmann thanks Schenker for sending him the critical editions of Beethoven’s
    Op. 110 and Op. 111. He enjoyed reading the attacks on Schenker’s rival authors, but he also
    thinks that a more conciliatory language would be more appropriate for such publications. He
    looks forward to the publication of Op. 106. 
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WSLB-Hds 95655 Handwritten letter from Schenker to Seligmann, dated August 5, 1916
 Schenker explains why he is reluctant to produce a critical edition with
        commentary for Beethoven’s Op. 106: he would wear himself out working on it unless he could
        be freed from some of his teaching obligations, and also the autograph manuscript and other
        sources are missing. He also defends his sharp tongue in discussions of the secondary
        literature in his “paradigmatic” works ("Beethoven’s Ninth Symphony" and the critical
        editions of the late Beethoven piano sonatas). 
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OJ 6/6, [7] Handwritten letter from Schenker to Moriz Violin, dated March 20, 1918
 [50th Festschrift:] Schenker intends not to influence anyone in their decision to
    contribute or not. — [Personal issues:] Schenker agrees to draw a line under issues discussed in
    OJ 6/6, [6]; however, he accounts for his epistolary silence regarding Valerie Violin, including
    the possible contact with Seligmann; he attempts to explain the matter of the jars of jam and
    the absence of visits to Schönbrunn, describing vividly how tirelessly Jeanette works and how
    dependent they both are on Sunday for work time; he expresses outrage that he and Jeanette live
    so poorly while his pupils live lives of luxury, commenting bitterly on state of play over the
    Sofie Deutsch stipend; he wishes the Violins well for their 6-month stay in Marburg.  
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OJ 13/10, [6] Handwritten letter from Oppel to Schenker, dated February 19, 1919
 Oppel thanks Schenker for EA, Opp. 110 and 111, which he has enjoyed, inquires
    after EA, Opp. 101 and 106, and Kontrapunkt 2, and raises a possible thematic link between two
    movements of Op. 110 (music example). His plan to study with Schenker has to be deferred; he
    will soon send compositions, and asks for unsparing criticism.  
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OJ 10/1, [45] Handwritten letter from Dahms to Schenker, dated September 26, 1919
 Dahms responds to Schenker's letter (non-extant). He reflects on Prussian
    militarism. He declares that there is no such things as "military genius"; Germany was as guilty
    as the Entente Powers for the war; soldiers were treated as slaves by their officers, with
    Wilhelm II bearing the ultimate guilt. He rejects all political parties. England does not treat
    its people as Germany does. He believes only in the German spirit, which he regards as the
    spirit of the world. He cannot wait to leave Germany, and wants only to immerse himself in
    Schenker's work.  
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OC 24/20 Handwritten letter from Frimmel to Schenker, dated August 1, 1921
 Frimmel acknowledges receipt of a complimentary copy of Tonwille 1, comments
        neutrally on Schenker's incursions into politics, imagines something rather different by the
        concept of "Tonwille," and while agreeing with the criticism of Riemann thinks it could have
        been done more gently. — He asks for review copies of Schenker's editions of Beethoven Op.
        110 and 101. 
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OJ 11/10, [16] Handwritten letter from Frimmel to Schenker, dated September 26, 1921
 Frimmel thanks Schenker for delivery of the latter's elucidatory editions of
        Beethoven's piano sonatas Opp. 101 and 111, and expresses admiration. 
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OJ 14/45, [12] Handwritten letter from Moriz Violin to Schenker, dated October 30, 1921 
 Violin reports on his work, and on musicians in Hamburg, and congratulates
    Schenker on his (publication) successes. 
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OC 12/10-12 Handwritten letter from Halm to Schenker dated dated February 1–6, 1924
 Halm offers to send two of his books in return for Schenker's Opp. 109, 110, 111;
    he discusses the role of improvisation in his own music; he seeks "corporeality" in music, and
    its absence in Brahms troubles him; argues the case for Bruckner; asks Schenker to choose a
    passage exhibiting non-genius in his or Oppel's music and discuss it in Der
    Tonwille. 
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OJ 6/7, [23] Handwritten letter from Schenker to Moriz Violin, dated July 26, 1925
 Two weeks after arriving in Galtür for the summer holidays, Schenker reports that
    he has caught up on his sleep and has already dictated an essay on Reger's Variations and Fugue
    on a Theme of J. S. Bach, Op. 81. He will not allow the legal wrangle with Universal Edition to
    interfere with his holiday, but he is annoyed about not having been paid by Drei Masken Verlag
    for the manuscript of Meisterwerk 1. He has responded to a critique of his Erläuterungsausgabe
    of Op. 110, in an essay in Meisterwerk 1, but will not pursue other attacks upon his work and
    those of his pupils. The Schenker medallion designed by Alfred Rothberger is going to a second
    impression; but the mezzotint portrait by Viktor Hammer, which Jeanette finds a superior work,
    has not yet been printed. Throughout the letter, Schenker urges Violin to bring his family to
    Galtür sometime during the summer. 
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OJ 5/9a, [1] Handwritten letter from Schenker to Georg Dohrn, dated April 5, 1926
 Schenker answers Dohrn's inquiry as to the performance of the opening of the
        second movement of Beethoven's Ninth Symphony. 
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WSLB 403 Handwritten letter from Schenker to Hertzka (UE), dated December 23, 1928
 Schenker reports on the autograph manuscript of Beethoven Op. 79. — He is
        "convinced" that the autograph of Op. 106 is in England. 
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Sbb 55 Nachl. 13, [3] Handwritten letter from Schenker to Wilhelm Furtwängler, dated April 19,
    1930
 Schenker is willing to hand over an unidentified "book" [Meisterwerk III] to
    Breitkopf & Härtel on condition that publication not be delayed; he refers to dealings with
    other publishers and plans for future publications.