of Christian Doctrine (CCD), engaged Fr. Francis J. Connell, professor of Moral Theology at the Catholic University of America, as editor and theological advisor in the production of the graded texts during the 1940s. Volume 1. The 33 lessons contained in Baltimore Catechism No. 1 present the basics of the Catholic faith in a manner suitable for first communicants through fifth graders. Volume 2. The 37 lessons contained in Baltimore Catechism No. 2 present the fundamentals of the Catholic Faith in a manner suitable for sixth through ninth graders and those preparing for Confirmation. Volume 3. The 37 lessons contained in Baltimore Catechism No. 3 are intended for students who have received their Confirmation and/or high schoolers. It includes additional questions, definitions, examples, and applications that build upon the content of the original Baltimore Catechism (No. 2). Volume 4. An Explanation of the Baltimore Catechism can be used as a reference work, or as a teacher's manual for the original Baltimore Catechisms. It is often used as an advanced textbook. Its explanations of many little known questions pertaining to the Catholic Faith are designed to reward the questioning reader. See also Catechism of the Catholic Church (1994) – current official universal catechism for the Catholic Church Catechism of the Council of Trent (1570) – or the Roman Catechism – previous official universal catechism for the Catholic Church United States Catholic Catechism for Adults (2006) – current official national catechism for the United States References Further reading Anecdotes and Examples Illustrating The Catholic Catechism: adapted to the Baltimore Catechism by Francis Spirago, Benziger brothers (1904). External links . An abridged edition for younger students. . The main edition. . An expanded edition for older students. . An annotated edition for teachers. The Catechism Explained, by Francis Spirago (1899). Catechism of the Council of Trent Catechism of the Catholic Church United States Catholic Catechism for Adults Catechisms of the Catholic Church