Warning This Section Does Contain Spoilers
In JWJ's Letter he mentions the city that honours the Jurassic. Also, the map that he sends us is a clue on his location. JWJ and Aaron de Vaille are in Garden of the God's, Colorado. There is the largest dinosaur fossil location in Garden Park located there and he tells us that this place honoured the Jurassic in 1982. We found an article in The Gazette that let us know that Colorado's state fossil was named the Stegosaurus in 1982. And the map is a map of Garden of the God's park.