The legitimacy of this story is also questioned in the biography of Alex Jordan written by Tom Kupsh. Tom Kupsh's book lists many of the same reasons as The House on the Rock website and also states that "The first agreement (an extended lease) with the Christianson family, who owned Deer Shelter Rock, was made some 30 years later in 1953 and no sign appeared at the road entrance until The House on the Rock opened to the public in 1960."