The Spiral Staircase

Unsolved Mysteries: The mystery of the staircase in Loretto Chapel, New Mexico. Could it have been St. Joseph or an angel? Or was it a mortal man from here on earth? There has been more than one proposal as to who might have built it. In 1970, Oscar Hadweger found what he felt was proof inside his grandfather's toolbox. All that exists today is this photocopy of the drawing which has since disappeared.