Now online: Anthony Sparrow, A Rationale upon the Book of Common Prayer (1655), here the 1684 ed. "The many commentaries through the centuries exemplify the esteem in which Anglicans hold the ancient Liturgy. Nowhere is this better seen than in Anthony Sparrow’s Rationale upon the Book of Common Prayer, which had been originally composed by him in 1655. In that year the Church of England was in exile, as the Great Rebellion had raged throughout the lands, and many of the ancient Anglican institutions were discounted as gone. The venerable Book of Common Prayer was outlawed, and any affection for it was cause for arrest and punishment. Sparrow, then a priest in exile wrote this magisterial Commentary both as a instructive treatise and a rallying cry for the Church in a desperate cause. To the world’s astonishment, the Church subsequently returned from exile; and Sparrow’s Commentary was an object of deep study and contemplation, during the 1662 edition of the Book of Common Prayer as we now have it." A fuller description is to be found here: http://www.anglican.net/news/sparrows-commentary-on-the-book-of-common-prayer-now-online/ As usual, if you notice any errors please post in the requisite thread. Thank you.