Apparently feeling that clarification was needed, someone affixed notes to the front covers of the six-volume set, "Word Pictures of the New Testament," found in my church.
The identical handwritten notes read as follows:
"The contents of these books are not inspired. They provide good background information, but with all of man's books, there may be errors."
Volume five (John -- Hebrews) does not carry the label, but I believe it's safe to say that while it provides good background information, it is not inspired and may contain errors.