Yeah, I know I never got around to inputting much of that book, and I don’t know why nobody’s just gone ahead and scanned The Blessed Virgin in the Fathers of the First Six Centuries, since it’s so far out of print it’s not funny. (Anybody but the people selling CDs and DVDs full of scanned Catholic books, anyway.)
For some reason, Worldcat has listed the 1893 Benziger edition as “thesis/dissertation”. Thus, it’s a pain in the butt to pull it out of the records.
But your man Fr. Livius has a couple of books online in handy scanned form:
Mary in the Epistles; or, The implicit teaching of the Apostles concerning the Blessed Virgin contained in their writings. Illustrated from the Fathers and Other Authors with Introductory Chapters. 1891. 310 pp.
He also translated Liguori’s Explanation of the Psalms and Canticles of the Divine Office in 1887. (There’s another English translation by Grimm, which came afterwards.) It’s not online, but reprints are available.
Other books by the man:
The order of corporate reunion, 1882. 31 p. A reprint from The Irish Ecclesiastical Record.
A brief memoir of the Rev. Fr. John Baptist Lans, C.SS.R., 1890.
Our Lady of Perpetual Succour: A manual of devotion for every day in the month by Henri Saintrain. Trans. by Livius, 1886.
Father Furniss and his work for children, 1896.