See this online text:
- Angels and Devils, by Rev. Dr. L. Rumble, M.S.C. With Imprimatur. Available in PDF format (on this page) of Catholic Pamphlets.net.
On the Feast of the Holy Guardian Angels in the Roman Rite. For other legally free ebooks, you may access the List of Free eBooks (Arranged by Title) and the List of Free eBooks (Grouped by Subject). Blessed be God in His angels and in His saints!