I am reading two books about visual images of God. Both are defenses of the practice of making images to represent God. One is specifically about the development of Christocentric images and images of God the Father from the Early Church through the Middle Ages. It is entitled "Seeing God". The second is more specifically about the justification of the making of images of Jesus. It is entitled "Seeing Salvation".
They both have historically interesting information about the Church and Art, but the one thing that is evident in both is their reliance on various "Church Fathers" to base their "evidence" for the making and using of images of Jesus and God the Father. They are always arguing against Scripture instead of with Scripture. Anyone with a belief in the inerrant Word of God should be concerned.