To set up the treasure hunt, Preiss traveled to 12 locations in the US to secretly bury a dozen ceramic casques. Each casque contains a small key that could be redeemed for one of 12 jewels Preiss kept in a safe deposit box in New York. The key to finding the casques was to match one of 12 paintings to one of 12 poetic verses, solve the resulting riddle, and start digging. One of the two casques which have been recovered was located in Grant Park, Chicago, and was found in 1983 by a gr...
