From the "Chant in Colonial Canada" page of the Gregorian Institute of Canada come the following interesting images. (Do go over there for more information and further images.)
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"This is one of the earliest chant editions specially destined to the Seminary of Saint-Sulpice, comprising the office and mass to be celebrated on the occasion of three feasts: Vitae interioris Domini Nostri Iesu Christi (celebrated on the Thursday following the second Sunday after Easter); Divini Sacerdotii Domini Nostri Iesu Christi (celebrated on August 30); and Vitae interioris B. Mariae Virginis (celebrated on October 19)."
"This is one of the earliest chant editions specially destined to the Seminary of Saint-Sulpice, comprising the office and mass to be celebrated on the occasion of three feasts: Vitae interioris Domini Nostri Iesu Christi (celebrated on the Thursday following the second Sunday after Easter); Divini Sacerdotii Domini Nostri Iesu Christi (celebrated on August 30); and Vitae interioris B. Mariae Virginis (celebrated on October 19)."