Keywords
- Germany--Cologne1
- Germany--Elchingen1
- Gregorian chants--Instruction and study1
- Headbands1
- Hymns1
- Inscriptions1
- International relations1
- Jesuits1
- Kölner Dom1
- Lent1
- Liturgical books1
- Magnificat (Music)1
- Manuscript waste1
- Manuscripts, Dutch1
- Marginalia1
- Mensural notation1
- Missals1
- Missals (Service books)1
- Netherlands1
- New Jersey--Princeton1