I just made two suggestions,
https://feedback.faithlife.com/boards/logos-book-requests/posts/symbol-or-substance-a-dialogue-on-the-eucharist-with-c-s-lewis-billy-graham-and-j-r-r-tolkien
https://feedback.faithlife.com/boards/logos-book-requests/posts/catholics-and-protestants-what-can-we-learn-from-each-other
and as a fan of Peter Kreeft I must admit that it's hard to make such suggestions instead of simply snatching the Kindle edition - but this is for the benefit of all of us (even though I continue to think that some publishers should bring all their catalog here, automatically). Please help upvoting this.