It's well known that Z called from a phonebooth in Napa after the Berryessa attack. Napa print people were able to lift a palm print from the phone that was so fresh, it had to be artificially dried. I was looking thru some old emails I got from a Napa Detective handling the case, and just wanted to share what he wrote in reply to me asking if that palm print was in a database someplace.
"Our print folks looked into the phone booth prints while I had it and most appeared to be cutting edge or partial palm but were too smudged to make identification points required for submitting to the data bases. I looked at them and no expert myself but they were not good"

