Signum Magnum
- Encyclical promulgated 13 May, 1967. About the spiritual motherhood of Mary, urges imitation of her virtues.
- http://www.newadvent.org/library/docs_pa06sm.htm

Humanae Vitae
- Pope Paul VI's most famous--or infamous, depending on one's perspective--encyclical. Shuns artificial methods of birth control. Promulgated 25 July, 1968.
- http://www.papalencyclicals.net/Paul06/p6humana.htm

Mense Maio
- On the occasion of the First of May. Encyclical promulgated 30 April, 1965.
- http://www.papalencyclicals.net/Paul06/p6month.htm

Marialis Cultus
- Apostolic Exhortation. On the right ordering and development of devotion to the Blessed Virgin Mary. Issued 2 February, 1974. 110K.
- http://www.papalencyclicals.net/Paul06/p6marial.htm

Christi Matri
- On prayers to Mary for peace. Encyclical promulgated 15 September, 1966.
- http://www.papalencyclicals.net/Paul06/p6christ.htm

Laudis canticum
- Apostolic Constitution, on the promulgation of the revised book of the Liturgy of the Hours, in 1970.
- http://www.catholicliturgy.com/index.cfm/FuseAction/DocumentContents/Index/2/SubIndex/39/DocumentIndex/372