Types of Angels

• A celestial Hierarchy - by Pat Bartos
• Angels - by Fr. John Trigilio
• Angel - by Hugh Pope - Catholic Encyclopedia
• Catholic Encyclopedia: Guardian Angels
• Catholic Encyclopedia: Cherubim
• Catholic Encyclopedia: Demons
• Angels of the New Age Kind - by Mary Drahos
• Our Guardian Angels - by Rev. Alfred Boeddeker, O.F.M.
• Our Guardian Angels by Fr. Joseph Ventura, C.P.
• We All Have Our Own Special Guardian Angel by Fr. Hardon