Documents

Liturgical Book
Martyrologium Romanum (1928)

editio secunda post typicam

by Sacred Congregation of Rites (1928)

 liturgy   saints 

Encyclical
Mortalium animos

Promoting true religious unity

by Pope Pius XI (1928.01.06)

 ecumenism 

Encyclical
Miserentissimus Redemptor

On reparation to the Sacred Heart

by Pope Pius XI (1928.05.08)

 Sacred Heart 

Apostolic Letter
Friburgensis archidiœcesis

by Pope Pius XI (1928.07.11)

Apostolic Letter
Dilectus filius

by Pope Pius XI (1928.07.11)

Apostolic Letter
Decessor Noster

by Pope Pius XI (1928.07.11)

Apostolic Letter
Cum tu

by Pope Pius XI (1928.07.12)

Apostolic Letter
Quum ex Apostolico

by Pope Pius XI (1928.07.18)

Apostolic Letter
Per similes

by Pope Pius XI (1928.07.18)

Apostolic Letter
Ex hac

by Pope Pius XI (1928.07.19)

Apostolic Letter
Inter præstantiores

by Pope Pius XI (1928.08.02)

Apostolic Letter
Providentia opportuna

by Pope Pius XI (1928.08.15)

Apostolic Letter
Leodiensis diœcesis

by Pope Pius XI (1928.08.24)

Apostolic Letter
Sagiensis diœcesis

by Pope Pius XI (1928.08.29)

Encyclical
Rerum orientalium

On the reunion with the Eastern Churches

by Pope Pius XI (1928.09.08)

 Eastern Churches 

Apostolic Letter
Monasterii Sanctæ Mariæ

by Pope Pius XI (1928.09.29)

Apostolic Letter
Prædecessor noster
Prædecessor noster

by Pope Pius XI (1928.10.15)

Apostolic Letter
Commissum nobis

by Pope Pius XI (1928.10.15)

Bull
Divini cultus

On liturgical music

by Pope Pius XI (1928.12.20)

 music