Holy Orders
- A catechism-like question and answer on Holy Orders, in The Catholic FAQ, based on Holy Scriptures and related Church teaching.
- http://www.newadvent.org/library/almanac_thisrock.htm

Priesthood
- Holy orders turn an ordinary man into a priest, a prophet, a king, and a teacher.
- http://savannahpriest.com/priesthood

On the Catholic Priesthood (Ad Catholici Sacerdotii)
- Encyclical promulgated in 1935 by Pope Pius XI on Catholic Priesthood who are "ordained for men in the things that appertain to God."
- http://www.ewtn.com/library/ENCYC/P11CATHO.HTM

Learn More about Holy Orders
- In articles and questions format is shown how the ordained priest does his work by bringing the Sacraments to the faithful.
- http://www.americancatholic.org/Features/Sacraments/HolyOrders.asp

Extreme Unction and Holy Orders
- The questions and answers of the Baltimore Catechism give a definition of Extreme Unction in numbers 956-977 and Holy Orders in numbers 978-1004, elaborating on each of them in turn.
- http://www.catholic.net/RCC/Catechism/3/l25.html