"This house in the mountains of Aspen, Colorado, was designed for Dr. William Polk who was most instrumental in the publication of Fathy's book "Architecture for the Poor" in America, and who also wrote the book's introduction. The house stretches out along a high ridge, overlooking groves of aspen trees." (construction not verified)
Source
Steele, James. 1997. An Architecture for People: The Complete Works of Hassan Fathy. London, United Kingdom: Thames and Hudson.