When was 'Prince of Peace' published? Is it on the cd-rom?
1986, and it's on the cd-rom under the title Worldwide Security. On the cd-rom, the relevant quote about "Mediator" is on page #11.
I had a JW relative claim that the passage about Jesus not being his Mediator is old truth. He simply had never heard of it, and therefore concluded that is must not be current truth. (Which is actually a fairly logical assumption)
I had to tactfully explain to him that Watchtower "truth" is valid until another truth comes out that changes it, regardless of its age.