On November 26th 1990, The Des Moines Register (and other newspapers throughout 1990) reported on plans for a new national postal museum, housing "the world's largest and most comprehensive postal and philatelic collection". The article referenced Chester Carlson as a rather obscure but important American, whose discovery of the xerographic process would become known as "the invention that no one wanted". This would ultimately prove to be one of the biggest misstatements ever, when you consider this form of technology is still widely used in current times.
The Zodiac Killer appeared to be a well-read individual, with one eye in the newspapers, and one eye on history. The only time the Zodiac Killer employed the use of a photocopied image (Xerox) in his communications was when he mailed the 1990 Eureka card (Christmas card) sometime in December, with the cover message of "From your secret pal. Can't guess who I am yet? Well, look inside and you'll find out". Inserted within the greetings card was the photocopied image of two post office box keys.
When analysed, the numbers on the keys would be traced back to Chester Clark Klingel, the namesake of Chester Carlson (first spotted by forum contributor Nin). His obituary read "Chet's first wife Yolanda passed away in a car accident. His second marriage was short but his third to Blandina Sarkis added love, happiness, family and great food to his life. He had many good years in Tam Valley, CA, before beginning a farming venture near Turlock, CA. Chet and Blandina bought nut orchards and developed a successful walnut hulling and drying business. After Blandina passed away, the farming project lost appeal. Chet sold the farm and moved to Eureka, CA, where he made new friends". The Zodiac Killer was certainly clever in the design of his communications, so were the photocopied keys leading to an individual called "Chester" Clark Klingel, a deliberate and calculated choice by the Bay Area murderer, who covertly slipped the name of "Chester" Carlson into the communication through inverted imagery "to clue us in"? Assuming of course, the Christmas card was mailed by the Zodiac Killer.
HAPPY CHRISTMAS TO ALL FROM RICHARD & ZODIAC CIPHERS