Historical clue formulations

• Liturgical book — 2026-03-22
• Liturgical reference book — 2020-09-24
• Prayer book — 2019-12-06
• Liturgical reference — 2010-01-17
• Catholic prayer book — 2007-05-08
• Book of prayers — 2005-07-21
• Prayer book — 2000-02-06
• Book with a Mass audience — 1995-10-22
• Book of prayers — 1995-10-08