POTHIER 1895 Liber Gradualis (the basis for the Vaticana) 
SCHWANN 1953 (edition of the Vaticana with editorial signs affecting the morae)
MOCQUEREAU 1921 Liber Usualis (edition of the Vaticana with Mocquereau's rhythmic signs)
NOVA ORGANI HARMONIA (1940's organ accompaniment based on the Vaticana with some morae marked)
MATHIAS 1912 (German school of interpreting the "pure" Vaticana)
SCHWANN 1953 (edition of the Vaticana with editorial signs affecting the morae)
MOCQUEREAU 1921 Liber Usualis (edition of the Vaticana with Mocquereau's rhythmic signs)
NOVA ORGANI HARMONIA (1940's organ accompaniment based on the Vaticana with some morae marked)
MATHIAS 1912 (German school of interpreting the "pure" Vaticana)
