Ran across this– if you’ve ever read any of H.P. Lovecraft’s work, you’ll get the joke:

Subj: Delta Green: How to Survive in a Lovecraft Story
date: 98-04-27 13:29:22 EDT
From: oaktree@nocturne.org (Chris Womack)
Sender: owner-deltagreen@nocturne.org
Reply-to: deltagreen@nocturne.org (Delta Green List)
To: deltagreen@nocturne.org
I wrote this a while back, and while I originally had Lovecraft’s original 20’s-era fiction in mind, a good many of these suggestions might prove of benefit to Delta Green agents today… Note: these are tips for survival should one find oneself in a piece of Lovecraftian fiction. Attempts to apply them to a Call of Cthulhu game campaign should be undertaken only with extreme caution.