• 19th-century Eastern Catholicism(2 C, 1 P)

B

• 19th-century Catholic church buildings(2 C)

C

• 19th-century Catholics(4 C, 7 P)
• 19th-century Catholic Church councils(8 P)

K

• Kulturkampf(9 P)

L

• Pope Leo XII(3 C, 2 P)

O

• Catholic organizations established in the 19th century(4 C, 26 P)

P

• 19th century in the Papal States(12 C, 1 P)
• 19th-century papal bulls(1 C, 8 P)

R

• Religious Question(4 P)

V

• 19th century in Vatican City(5 C)

0–9

• 1st National Eucharistic Congress (United States)
• 19th-century Catholic periodical literature
• 19th-century history of the Catholic Church in the United States
• 1823 conclave
• 1829 conclave
• 1830–1831 conclave
• 1846 conclave
• 1878 conclave

A

• Advocates of Saint Peter
• Americanism (heresy)

C

• Catholic Action
• Catholic temperance movement
• Cisalpinism
• Congress of Peace in Geneva
• Crotty Schism

E

• Etsi multa

K

• Kulturkampf

L

• Law of Guarantees
• Liturgical Movement

N

• Neo-ultramontanism

O

• Officiorum ac Munerum

P

• Petite Église
• Popes during the Age of Revolution
• Preservative Against Popery

Q

• Quartus supra

R

• Restoration of the Scottish Catholic hierarchy
• Roman question
• Romanos Pontifices
• Royal veto of the appointment of bishops

S

• Society of St Peter (Congrégation de Saint-Pierre)

W

• Würzburg Bishops' Conference