John Cannon 
ANGELS, An All-Catholic Summary 

This book summarizes the thoughts of the greatest of the Catholic philosophers on the subject of angels. Although there are 227 references to angels in scripture, very few people know exactly who the angels are, the "essence" of the very nature of an angel. Their perfections are made clear, their power and influence over our lives laid bare, and the result is almost indescribable joy at knowing that they are our loving "big brothers" to whom we can turn in our darkest hours, and who will celebrate with us over every accomplishment!