KAMANDI (issue 15) and Killraven (AM ADV 24) both have stories that came out in 1974, and each brought the Watergate tapes into their respective futures in delightfully absurd ways.
In KAMANDI 15, the Watergate tapes are played very loud on some kind of audio-cannon, to torture Kamandi and members of the tiger civilization that accompany him.
They are more quietly woven into the Killraven story.
It's amusing how in neither story are they recognized for their historic significance.
That's part of the fun of reading post-apocalyptic stories. Despite the world being in ruins, the historic artifacts that are a mystery to the characters in the story are all familiar to us as readers.
