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:

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.