Because I visited Death Valley several times in the 1950's and '60's, and read much of its history, I probably know more about the flamboyant Walter Scott, AKA "Death Valley Scotty," than the average person. He was, first, a consummate liar and con man, albeit a charming one. He had tried several jobs, but was a drifter at heart. He was, mostly, a failure at mining. He eventually befriended one Albert Johnson, an insurance executive from Chicago, and so charmed him that Johnson, who was in frail health, and his wife went to Death Valley and bankrolled "Scotty's Castle," the large and ornate residence that you can visit today. This place is still so remote that people marvel at the place. To have built it when there were no good roads beggars the imagination.

Scotty let it be known that his "wealth" came from his secret gold mine. In truth, the gold mine was in Albert Johnson's bank account.
One of his larks was to charter a train (again, with the indulgent Johnson's money) from Los Angeles to Chicago, with the aim of setting a speed record, which he actually accomplished. This ride made him famous.

By the way, he never lived in the "castle." That was occupied by the Johnsons and their staff. Scotty lived up Grapevine Canyon in his modest shack until he died, circa 1953 or '54. Other stories, tall tales and real, often relating to earlier scams he tried to run, are endless.

With all that, I never heard a song associated with him, though he certainly would have provided fodder for one or more.