Bentley's Telegram Code

When you're running a Call of Cthulhu scenario in the classic era there are few clues more intriguing than a telegram that appears to be total gibberish.  It's obviously a code of some kind, but what does it say?  Having your players decode the message is about as immersive as it gets.

Thanks to the Internet Archive, creating that ciphered handout is absurdly easy.  Just download the 1921 edition of Bentley's Complete Phrase Code, encode your message, write it out on one of the blank telegram forms available here, here, here, and here, on Propnomicon, and you're good to go.  You can't beat providing a copy of the codebook to your investigators and having them actually do some cool investigating.