Andrew Abbott Gerald Abraham Stephen Ackert Ippolita Adamoli Charles B. Adams Gwen Elaine Adams Cecil Adkins Aeolian Company Aeolian-Skinner Organ Co. Aeolian-Votey (Firm), Isolde Ahlgrimm Jürgen Ahrend Christian Ahrens Manfred Albus Putnam Aldrich Alexander Schuke Orgelbauanstalt (Firm), Alfred Nash Patterson Foundation for the Choral Arts., Hugo Alker, [from old catalog] Max Allihn Alphonse Leduc (Firm), Jonathan Ambrosino Konrad Ameln American Guild of Organists American Institute of Organbuilders., American Organist., American Photo Player Company., Elias Nikolaus Ammerbach Christine Ammer Rupert Amschwand Poul Gerhard Andersen Christopher Anderson H. Emerson Anderson H. Orsmond Anderton Andover Organ Co., David T. Andrews Harold Gilchrist Andrews Myroslav Antonovych Joseph Antony Willi Apel Richard G. Appel Henry Aragon Marie Réginald A. Arbus Lawrence Archbold Agnes Armstrong William H. Armstrong William; Locklair Armstrong, Paula Corliss Richard Arnold F. T. Arnold J. H. 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Hoover Hope-Jones Organ Co., Edward J. Hopkins E.j Hopkins W. Garrett Horder Tomáš Horák John Horton Peter Horton François-Henri Houbart George Houle Étienne Houvet M. Hoving John Tasker Howard M. A. De Wolfe Howe Frank Hubbard Tedy Hubschmid Jo Huddleston Francis Hueffer Hans Erwin Huggler Anselm Hughes Edwin Holt Hughes Tony Hughes Toby Huitson Albrecht Häu ler A. Eaglefield Hull Paul Hume Donald Hunt Eileen J. Hunt Reginald Hunt Michael Hurd Peter Hurford Jean Huré Don Hustad Arthur Hutchings Farley K. Hutchins John C. Huxford Christiaan Huygens Constantijn Huygens Scott Hyslop A. Z. Idelsohn Vincent d'Indy Janyce Greenleaf Ingalls Madeline D. Ingram Institucion Fernando el Catolico Institut grégorien de Paris., International Associa... Halle an der Saale Internationale Arbeitsgemeinschaft für Orgeldokumentation., Germany) Internationaler Gottfried-Silbermann-Wettbewerb, Amsterdam International Society of Organbuilders., Netherlands) Hans-Josef Irmen Stevens Irwin Gisela Jaacks Alan Jackson George Pullen Jackson Richard Jackson Roland John Jackson Arthur Jacobs P. Immanuel Jacobs Ruth Krehbiel Jacobs Albert Jacquot Yves Jaffrès Hans Henny Jahnn Friedrich Jakob Helga James William Grant James James Blaine Jamison Marie-Louise Jaquet-Langlais Camilla Dolores Fleur Jarnot Lady Jeans. Susi Jeans James Jeans Bob Jefferson Paul Jenkins Arthur B. Jennings Knud Jeppesen Hazel Bell Henry Jewett J.F. Nordlie Company., Eberhard Jäger J.H. & C.S. Odell & Co., J.m.b. Michele Johns A. N. Johnson Calvert Johnson David N. Johnson Douglas Johnson H. Earle Johnson Joyce L. Johnson Lawrence J. Johnson Robert Sherlaw Johnson Jill Johnston W. H. John Joyce Jones Peter Jones Stephen Jones Jan Jongepier James Mark Jordan Owen Jorgensen Robert Judd John Julian Sverker Jullander David L. Junchen Miguel P. Juárez Odile Jutten J.W. Walker & Sons Ltd., Paul Kaiser Wolf Kalipp Martin Kares Sigfrid Karg-Elert Karl-Marx-Universität Leipzig., Georg Karstädt Michael Kassler Macario Santiago Kastner Michael Gerhard Kaufmann Schima Kaufman Helen Keaney William Kearns Jonathan Keates Kegg Pipe Organ Builders., Roy Frederic Kehl Jodok Kehrer W.H. Keikes Marilyn J. Keiser Hermann Keller Herbert Kelletat Friedrich Kempf Sylvia W. Kenney Joseph Kerman Ernst Kern Dorotéa Kerr Donald D Kettring Hannelore Köhler Michael D. Kinerk Kinetic Engineering Co., James King Otto Kinkeldey Allen. Kinzey F. E. Kirby Gerhard Kirchner Ralph Kirkpatrick A. Lindsey Kirwan Alan T Kitley Charles H. 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Schultz Hans-Joachim Schulze Richard Schulze Robert Schumann Ernst Schürer Otto Scrinzi / Jürgen Schwab Berthold Schwarz Christoph Schwarzenberg Peter Schwarz Hertha Schweiger Albert Schweitzer Barbara Schwendowius David Scott Geoffrey Scott Sears Roebuck and Co. Second Congregational Church Günter Seggermann Jiří Sehnal Jiri Sehnal Maarten Seijbel Achim Seip William Self Arno Semrau Georges Servières Jenny Setchell E. H. L. Sexton Ludwig Seyfarth Chet Shafer John R. Shannon James Raymond Sharp Watkins Shaw Andrew Shenton Russell Shepherd Stanley Shumway Carolyn Shuster-Fournier Katherine Siebel Walther Siegmund-Schultze Gonzalo Silva y Ramón George J. Simmonds John Baptist Singenberger Sacheverell Sitwell Ernest M. Skinner Skinner Organ Company., Ruth Isabel Skinner JoAnn Skowronski F. Z. Skuherský Reinhard Skupnik Franz-Josef Sladeczek Sally Jo Sloane Basil Smallman Italy) S. Maria degli Angeli e dei Martiri (Church : Rome Friedrich Smend A. F. Smethurst Paul Smets Charles Davis Smith Charles Howard Smith David Lennox Smith David Stanley Smith Howard E. Smither G. H. Smith H. Augustine Smith Hermann Smith Melville Smith Ocean G. Smith Rollin Smith Stephen D. Smith Stephen D. Smith Marta Sánchez Jasper Whitfield Snowdon Francis W. Snow Robert J Snow Kerala J. Snyder Sandra Soderlund Monika; Peda Soffner-Loibl, Gregor Monika Soffner Elizabeth Sollenberger Edna Richolson Sollitt Oscar George Theodore Sonneck William E Soule E. A Sovik Leo Sowerby Walter Raymond Spalding Joel Speerstra Leslie P. Spelman Sperontes, Simon R. H. Spicer Hermann Spies Bryan D. Spinks Philipp Spitta Max Springer Wilhelm Stahl John Stainer F. C. Stam St. Andrews Episcopal Church Charles Villiers Stanford Richard J Stanislaw George B. Stauffer Frank Barney Stearns Graham Steed Helmut Steffens Fritz Wilhelm Stein Paul Steinitz C. Martin Steinmetz Theodore E. Steinway Martin Henry Stellhorn Denis Stevens Robert Stevenson Robert Murrell Stevenson Stichting Groningen Orgelland., Günther Stiller C. J. Stins Russell Stinson Frederic B. Stiven H. C. L. Stocks William H. Stocks George Appleton Stockwell Joseph Stone Kurt Stone G.C. Straker R. A Streatfeild L. van Strien Nancy Rubin Stuart G. Edward Stubbs Huskisson Stubington Lourens Stuifbergen Marilyn Kay Stulken Mary Kay Stulken Wilfried Stüven Vittore Sugàr Herbert Sullivan J. W. N. Sullivan Bernd Sulzmann William Leslie Sumner W. L. Sumner Johan Sundberg Lloyd Frederick Sunderman Walter Supper María Teresa Suárez Frederick Heathcote Sutton Jean Phyllis Swanson Hugh Swanton Laurence Swinyard James Rawlings Sydnor Hans-Christian Tacke Luigi Ferdinando Tagliavini Stefano Tamburini Thomas Tapper Giuseppe Tartini Nicholas E. Tawa Erich Taylor Stainton de B. Taylor Tellers-Kent Organ Company., Werner Tell T. Telman Nicholas Temperley Alec Templeton Charles Sanford Terry Richard Runciman Terry Eugene Thayer Sister. Theophane Hans-Martin Theopold Th. Frobenius & Sønner Orgelbyggeri., Eric H. Thiman Nicholas Thistlethwaite abbé. L. Thomas Anne Marsden Thomas fray Thomas de Sancta Maria Kurt THomas Kathleen Thomerson James William Thompson Erling A. Thomsen Andrew Thomson Frederick W. Thornsby Julien Tiersot Koos Tiggelaar Henri Th Timmerman Everett Titcomb H. Everett Titcomb Martin B. Tittle John Tobin J. Raymond Tobin Janet Satre Tobiska Walter Todds Lubomír Tomší Winfried Topp Richard Torrence William Tortolano Henri Tournaillon Charles Tournemire Donald Francis Tovey Ian Tracey Carol A. Traupman-Carr Max Tremmel C. H. Trevor Trinity Church Conn.) Trinity College (Hartford Daniel Gottlob Türk Helen Reed Trobian Richard Troeger Albert Troskie Everett E. Truette Everett Ellsworth Truette Norbert Tschulik C. Albert Tufts Nancy Poore Tufts David Tunley W. J. Turner Robert L. Tusler Kenneth Udy Joachim Uhlworm Andres Uibo Bernhard Ulrich Homer Ulrich Manfred Ungelenk Clive Unger-Hamilton Harvard University University Microfilms International University of Rochester., George P. Upton Stansilav Šurin William Urry Rudolf Utermöhlen Anne Utter Erich Valentin Walter S. Vale Léon Vallas Pierre Vallotton Floris Van der Mueren Richard R. Vander Woude Maurice Vanmackelberg Charles G. Vardell Various Vassar College., Christian Vater Ralph Vaughan Williams Gregor Vedder Jean Claude Veilhan M. A. Vente Maarten Albert Vente Leon Verschueren Vicaire de la paroisse., Mario A. Videla Louis Vierne Jean de Vincennes Mary Vinquist Virgil Fox Society., Piet Visser Charles Edward Vogan Harald Vogel Richard Voge Tomislav Volek Patrik Vretblad Romke de Waard Konrad Wagner Rüdiger Wagner Richard Wagner Werner Walcker-Mayer Sankt Märgen) Walcker-Stiftung für Orgelwissenschaftliche Forschung. Paul Walker James L. Wallmann Arthur Sumner Walpole Joachim Walter Rudolf Walter Samuel Walter Raymond Walters John Wanamaker Harald Wanger Justine Ward Dennis Waring Peter Waring John Watson Warman Thomas E. Warner John E. Warriner D. DeWitt Wasson Charles F. Waters Floyd Rowe Watson Stuart Waumsley David Allan Weadon Charles T. Webb James Ingall Wedgwood Richard Otto Wegner Bruno. [from old catalog] Weigl Karl Weinmann Carl Weinrich Herbert Weinstock Wilfrid Weld R. E. Jan Wenig Wolfgang Wenke Walter Werbeck Andreas Werckmeister Werner Bosch (Firm), Samuel Wesley Samuel Sebastian Wesley Frederick T. Wessel Gösta Westblad Bertil Wester Herbert Westerby Paul Westermeyer Mass.) Westfield Center for Early Keyboard Studies (Easthampton John Ebenezer West J. A. Westrup Hermann Wettstein Martin Weyer Ernest White Evelyn Davidson White James T. White J. Perry White John Scott Whiteley John Porter Whiteside Terence White Robert B. Whiting T. Carl Whitmer Craig R. Whitney Reginald Whitworth Hans Hermann Wickel David C. Wickens Mark Wicks Wicks Organ Co., Highland Wicks Organ Company, Ill Charles-Marie Widor Elwyn A. Wienandt Frank van Wijk John Wild B.A. Roger Wilkes James O. Wilkes Charles Willeby Willem van Leeuven Gzn., C. F. Abdy Williams Chester W. Williams George Walton Williams Jeffrey R. Williams Loren R. Williams Roy Williamson Peter Williams Peter Williams Peter F. Williams Donald Willing Henry Willis A. W. Wilson David Wilson Harry Robert Wilson John Russell Wilson Michael I. Wilson Wilfrid G Wilson Clifford E. Winckler Catherine Winkworth Winston Churchill Memorial Trust Carl Winter Bert Wisgerhof Dietrich Wölfel Franz Wüllner Wm. Hill & Son., Frederick William Wodell Gerald Woehl Hannsdieter Wohlfarth Edward Christopher Wolf Paul Austin Wolfe Christian Wolff Christoph Wolff Joh. Christian Wolfram William J. Wolf Byron Adams Wolverton David A. Wood Henry Wood G. Wallace Woodworth Margot Ann Greenlimb Woolard H. Ellis Wooldridge Craig M. Wright Joseph Würsching Otto Wulff Ulrich Wulfhorst H. C. J. Wullink W.W. Kimball and Company., James Wyly Yale School of Music., Yale University yearsleydavidgaynor Victor Fell Yellin Yves Yollant Metropolitan Museum of Art Carlton R. Young Jonathan F. Young Levi Edgar Young Percy M. Young Gerhard Zeggert Helmut Zeraschi Franklin B. Zimmerman Virginie Zinke-Bianchini Stefan Zöllner Jennifer Zobelein John Zundel Jindřich Závodný Jan Zwart