See this legally free ebook:
- The Mercies of the Sacred Heart: Twelve Sermons for the First Fridays, by the Very Rev. [later Bishop] Alexander MacDonald, D.D. [1858-1941] (New York: J. F. Wagner, 1904). With Imprimatur. May be read online, and available in pdf, mobi, epub, and other formats at Internet Archive.
See also these related texts:
- Devotion to the Sacred Heart of Jesus, by Father John Croiset, S.J., translated from the Italian (London: Burns & Lambert, 1863). With Imprimatur. Available in PDF format (here) at the Catholic Kingdom; and available in various formats at Internet Archive, Internet Archive (2nd copy), and Internet Archive (3rd copy).
- Divine Love Made Flesh: The Holy Eucharist as the Sacrament of Charity, by Raymond Leo Cardinal Burke (San Diego: Catholic Action for Faith and Family; San Francisco: Ignatius Press, 2012). The ebook is available at Barnes & Noble. The printed book is available on this page of The Marian Catechist Apostolate.
- Jesus Christ, the King of Our Hearts: Elevations on the Most Sacred Heart of Jesus, by Very Rev. Alexis M. Lépicier (London, Manchester, Birmingham, Glasgow: Burns, Oates & Washbourne, Published 1921). With Imprimatur. Available in multiple formats at Internet Archive, Open Library, and Forgotten Books.
- We Consecrate Ourselves to You Forever, O Hearts of Jesus and Mary (06 May 2003). May be read online at Christendom Awake: Part 1 and Part 2.
On the Feast of the Most Sacred Heart of Jesus in the Roman Rite. For other texts and ebooks, you may access the List of Free eBooks (Arranged by Title), the List of Free eBooks (Grouped by Subject), the List of Worth-It Catholic Books & eBooks, and the main page of the Catholic eBooks Project.