Nicene and Post-Nicene Fathers, Series II, Vol. VII
Five Catechetical Lectures to the Newly Baptized .
Introduction to the "Theological" Orations.
Website by C.J.S. Hayward, who has a very interesting bookshelf. A little curious about his own books? The Angelic Letters and Doxology are both included in C.J.S. Hayward in Under 99 Pages. You may be very interested in the Classic Orthodox Bible.