Balthasar de Porta, Expositio Canonis Missae (Leipzig, ca. 1495) — Editio princeps of a Cistercian Mass commentary. This copy bears a handwritten sacristy inventory listing wax, salt, holy water, ampullae, and altar cloths—tangible evidence of late-medieval liturgical life.
ISTC has 1429 hits for Leipzig. III. 466J Balthasar de Porta (fl. 1487- 1499) Expositio Canonis Missae. (Canon sacratissime misse: unacum expositione eiusdem: ubi in primis premittit pulchra contemplatio ante missam habenda de christi pulcritudine. Et quo mo[d]o ipsa in sua passione: ab eo... Continue Reading →
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