Samuel Cox

Over the next year I'll be studying the Epistles of John, Philemon, and Ruth. An old commentator, Samuel Cox, has written commentaries on II & III John and the other two. Has anyone ever used these works? What was your opinion?

Does anyone know where they could be purchased? II& III John and Philemon used to be bound as one and called "The Private Letters of Paul and John" and the Ruth volume was part of an old set called "The Devotional Commentary". I've learned that Klock republished these--Ruth bound with Fuller's work, Philemon bound with Drysdale's work, and II & III John bound with I John by James Morgan. I've nver been able, though, to find any of them. I'd appreciate any info. Thanks.