https://archive.org/details/memoriesoffuture0000knoxMemories of the Future: Being Memories of the Years 1915–1972, Written in the Year of Grace 1988 by Opal, Lady Porstock (1923). Combines a parody of the current autobiographies of women of fashion with a gentle satire on current whims—educational, medical, political and theological.
https://archive.org/details/othereyesthanour0000knoxOther Eyes Than Ours (1926). A satirical tale about a hoax played on a circle of spiritualists
https://archive.org/details/beliefofcatholic0000knox_h2r4/page/n3/mode/2upThe Belief of Catholics (1927). His survey of Catholic belief, considered a classic of apologetics and a Catholic equivalent to C. S. Lewis's Mere Christianity.
Not PD for Life + 70