1.  Adelson, Robert.  Originality and Influence: Charles Gröll’s Role in the Invention of the Double-Action Harp (Warsaw: Muzyka, 2019) vol. 64, no. 1

 

2. Anonymous.  Double Action Harps,  New York Daily Harold, 04/12/1843, retrieved from https://www.newspapers.com/image/466569886/

 

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4. Anonymous.  It beats the record.  A special train of twenty cars loaded with pianos for Chicago (Chicago: The Inter Ocean, 1/01/1890) retrieved from https://www.newspapers.com/image/33354617/?terms=Lyon%20Pianos%20shipment&match=1 last accessed on 01/07/2022

 

5.  Baldwin, Mike.  Harp Making in Late Georgian London (London: Bright Light, 2020)

 

6.  Barthel, Laure and Vertesi, Janet.  Au Cœur De La Harpe Au XVIIIème Siècle (Paris: Garnier-François, 2005)

 

7.  Bochsa, Robert-Nicolas-Charles.  Petite Méthode pour la Harpe, op. 61 (Paris: Dufaut et Dubois, ca. 1825) retrieved from https://archive.org/details/petitemthodedeha00boch last accessed on 01/05/2022

 

8.  Cousineau, Jacques-George.  Méthode de Harpe (Paris: Chez Cousineau père et fils, ca. 1810) retrieved from https://s9.imslp.org/files/imglnks/usimg/e/e9/IMSLP252810-PMLP409682-mthodedeharpeoeu00cous.pdf last accessed on 01/05/2022


9. Durkee, George.  Harp, U.S. patent no. 437,917 (Washington, D.C.: United States Patent Office, 1890)  retrieved from https://pdfpiw.uspto.gov/.piw?PageNum=0&docid=00437917&IDKey=F568862FF1C2%0D%0A&HomeUrl=http%3A%2F%2Fpatft.uspto.gov%2Fnetacgi%2Fnph-Parser%3FSect1%3DPTO2%2526Sect2%3DHITOFF%2526p%3D1%2526u%3D%25252Fnetahtml%25252FPTO%25252Fsearch-bool.html%2526r%3D1%2526f%3DG%2526l%3D50%2526co1%3DAND%2526d%3DPALL%2526s1%3D0437%2C917.PN.%2526OS%3DPN%2F0437%2C917%2526RS%3DPN%2F0437%2C917,  last accessed 13/02/2022


10. Durkee, George.  Harp, U.S. patent no 437,918 (Washington D.C.: United States Patent Office, 1890) retrieved from https://pdfpiw.uspto.gov/.piw?PageNum=0&docid=00437918&IDKey=8E9B862FABE7%0D%0A&HomeUrl=http%3A%2F%2Fpatft.uspto.gov%2Fnetacgi%2Fnph-Parser%3FSect1%3DPTO2%2526Sect2%3DHITOFF%2526p%3D1%2526u%3D%25252Fnetahtml%25252FPTO%25252Fsearch-bool.html%2526r%3D1%2526f%3DG%2526l%3D50%2526co1%3DAND%2526d%3DPALL%2526s1%3D0437%2C918.PN.%2526OS%3DPN%2F0437%2C918%2526RS%3DPN%2F0437%2C918, last accessed 13/02/2022


11.  Durkee, George.  Harp, U.S. Patent no. 509,022 (Washington D.C.: United States Patent Office, 1893) retrieved from https://pdfpiw.uspto.gov/.piw?PageNum=0&docid=00509022&IDKey=9CD0A4D98851%0D%0A&HomeUrl=http%3A%2F%2Fpatft.uspto.gov%2Fnetacgi%2Fnph-Parser%3FSect1%3DPTO2%2526Sect2%3DHITOFF%2526p%3D1%2526u%3D%25252Fnetahtml%25252FPTO%25252Fsearch-bool.html%2526r%3D1%2526f%3DG%2526l%3D50%2526co1%3DAND%2526d%3DPALL%2526s1%3D0509%2C022.PN.%2526OS%3DPN%2F0509%2C022%2526RS%3DPN%2F0509%2C022

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12.  Durkee, George.  Harp, U.S. patent no. 538,038 (Washington D.C.: United States Patent Office, 1895) retrieved from https://pdfpiw.uspto.gov/.piw?PageNum=0&docid=00538038&IDKey=2BB3AA8A83B5%0D%0A&HomeUrl=http%3A%2F%2Fpatft.uspto.gov%2Fnetacgi%2Fnph-Parser%3FSect1%3DPTO2%2526Sect2%3DHITOFF%2526p%3D1%2526u%3D%25252Fnetahtml%25252FPTO%25252Fsearch-bool.html%2526r%3D1%2526f%3DG%2526l%3D50%2526co1%3DAND%2526d%3DPALL%2526s1%3D0538%2C038.PN.%2526OS%3DPN%2F0538%2C038%2526RS%3DPN%2F0538%2C038l

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13. Érard, Pierre-Orphée.  The Harp in Its Present Improved State Compared with the Original Pedal Harp (London: Érard House: 1821) retrieved from https://objects.library.uu.nl/reader/index.php?obj=1874-253242&lan=en#page//91/63/42/9163422596503211975460860201857604701.jpg/mode/1up last accessed on 04/01/2022

 

14.  Érard, Pierre-Orphée.  Certain improvements on harps (London: HMSO, 1835)

 

15.  Érard, Sébastien.  Certain further improvements upon pianofortes and harps, English patent no. 3332 (London: HMSO, 1810)

 

16. Érard, Sébastien.  Certain improvements on the harp and pianoforte both large and small, English patent no. 2016 (London: HMSO, 1794)

 

17. Érard, Sébastien.  Certain improvements upon pianofortes & harps, large & small, and harps, English patent no. 3170 (London: HMSO, 1808)

 

18. Érard, Sébastien.  Improvements in the construction of the musical instrument called a harp, English patent no. 2595 (London: HMSO, 1802)

 

19. Érard House. Ledgers 1811-1829.  Collection of the Royal College of Music,  retrieved from https://archive.org/details/erard-harp/ErardHarp_1/page/n389/mode/2up, last accessed on 12/03/2022

 

20.  Gatayes, Guillaume-Pierre-Antoine.  Méthode de Harpe facile à concevoir (Paris: Chez Imbault, ca. 1790) retrieved from https://imslp.org/wiki/Special:ImagefromIndex/538162/aymu last accessed on 01/05/2022

 

21.  Genlis, Caroline-Stéphanie-Félicité.  Nouvelle Méthode pour apprendre à jouer de la Harpe en moins de Six Mois de Leçons (Paris: Chez Mme. Duhan, 1811) retrieved from https://archive.org/details/nouvellemethodep00genl/mode/2up last accessed on 04/01/2022


22.   Kirk, Walter. Harp. U.S. Patent no. 1,167,504 (Washington D.C.: United States Patent Office, 1916) retrieved from https://pdfpiw.uspto.gov/.piw?PageNum=0&docid=01167504&IDKey=91E7C6806DD6%0D%0A&HomeUrl=http%3A%2F%2Fpatft.uspto.gov%2Fnetacgi%2Fnph-Parser%3FSect1%3DPTO2%2526Sect2%3DHITOFF%2526p%3D1%2526u%3D%25252Fnetahtml%25252FPTO%25252Fsearch-bool.html%2526r%3D1%2526f%3DG%2526l%3D50%2526co1%3DAND%2526d%3DPALL%2526s1%3D1167504.PN.%2526OS%3DPN%2F1167504%2526RS%3DPN%2F1167504 last accessed on 13/02/2022


23.  Kirk, Walter.  Harp Neck, U.S. patent no. 1,153,317 (Washington D.C.: United States Patent Office, 1915) retrieved from https://pdfpiw.uspto.gov/.piw?PageNum=0&docid=01153317&IDKey=9B471C12C766%0D%0A&HomeUrl=http%3A%2F%2Fpatft.uspto.gov%2Fnetacgi%2Fnph-Parser%3FSect1%3DPTO2%2526Sect2%3DHITOFF%2526p%3D1%2526u%3D%25252Fnetahtml%25252FPTO%25252Fsearch-bool.html%2526r%3D1%2526f%3DG%2526l%3D50%2526co1%3DAND%2526d%3DPALL%2526s1%3D1153317.PN.%2526OS%3DPN%2F1153317%2526RS%3DPN%2F1153317

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24.  Kirk, Walter.  Harp Neck, U.S. patent no. 1,153,317 (Washington D.C.: United States Patent Office, 1915) retrieved from https://pdfpiw.uspto.gov/.piw?PageNum=0&docid=01153317&IDKey=9B471C12C766%0D%0A&HomeUrl=http%3A%2F%2Fpatft.uspto.gov%2Fnetacgi%2Fnph-Parser%3FSect1%3DPTO2%2526Sect2%3DHITOFF%2526p%3D1%2526u%3D%25252Fnetahtml%25252FPTO%25252Fsearch-bool.html%2526r%3D1%2526f%3DG%2526l%3D50%2526co1%3DAND%2526d%3DPALL%2526s1%3D1153317.PN.%2526OS%3DPN%2F1153317%2526RS%3DPN%2F1153317 last accessed on 13/02/2022


25.  Lyon & Healy.  The Lyon & Healy Harp (Chicago: Lyon & Healy, 1889, 1979 reprint)


26. Lyon & Healy.  The Lyon & Healy Harp (Chicago: Lyon & Healy, 1916) retrieved from https://explore.digitalsd.org/digital/collection/mahoney/id/2565/rec/9 last accessed 01/07/2022


27. Lyon & Healy.  The Lyon & Healy Harp (Chicago: Lyon & Healy, 1935) retrieved from https://explore.digitalsd.org/digital/collection/mahoney/id/3860 last accessed on 12/02/2022


28.  Lyon & Healy.  Salzedo Model Harp, retailer’s website, https://www.lyonhealy.com/harps/salzedo/ last accessed on 9 Sept. 2021


29.  Lyon & Healy.  Untitled Advertisement (Chicago: Chicago Tribune, 24/03/1889) page 16, retrieved from https://www.newspapers.com/image/349896338/?terms=Lyon%20%26%20Healy&match=1, last accessed 01/07/2022


30. Meyer, Philippe-Jacques.  Essai sur la vraie manière de jouer de la harpe avec une méthode pour l'accorder. (Paris: self-published, 1772) retrieved from https://archive.org/details/essaisurlavraiem00meye/page/n11/mode/2up last accessed on 01/04/2022

 

31.  Rensch, Roslyn. Harps and Harpists, Revised Edition. (Bloomington: Indiana University Press, 2017)

 

 

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