See this legally free ebook:

  • A Dogmatic Catechism, from the Italian of [Giuseppe] Frassinetti, revised and edited by the Oblate Fathers of St. Charles, with a Preface by the Archbishop of Westminster [Henry Edward Manning] (London: R. Washbourne, 1872). [N.B., The text appears to have been translated from the 6th Italian edition.] May be read online, and available in various formats (pdf, epub, mobi/kindle, etc.), at Internet Archive and Open Library. Also available at Hathi Trust Digital Library and Google Books (though the latter appears to require logging in).

On the Memorial of Saint Robert Bellarmine in the Ordinary Form of 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).