See this legally free ebook:

  • The Eastern Christians and Their Churches, by Father Steven Hawkes-Teeples, S.J. (New Haven, CT: Knights of Columbus Supreme Council, Catholic Information Service, 2008). With Imprimi Potest. Available in PDF format on this page of the Knights of Columbus.

On the Feast of Saint Bartholomew the Apostle (Shliha Mar Bartholomeo). 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).