1912 Franz Nekes • Organ Accompaniment to the “Ordinarium Missæ”
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1921 Le plain-chant grégorien
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1949 Gregorian Accompaniment Treatise (Lapierre)
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1910 (Anglican) Organum Comitans ad Kyriale
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1891 Dom Joseph Pothier Antiphonale
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1963 The Accompaniment of Plainsong (Fleming)
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1900s? Michael Horn Kyriale Accompaniments
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1937 Treatise on Gregorian Accompaniment (Marcel Dupré)
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1902 Ebner Kyriale Accompaniments
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Treatise on Gregorian Accompaniment (Flor Peeters)
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1857 Vesperale (Modern Notation)
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1946 L’Accompagnement Du Chant Grégorien — Francis Canon Potier
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1886 Vesperale Monasticum
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1906 Julius Bas Kyriale Accompaniments
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1851 Hymnarium Vesperale (Lambert)
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