Exclusive: a tour inside a Frank Lloyd Wright house in the Southwest reveals the power of the original interiors, never before published. I visited the Fir Tree House only once, in 1950. An apprentice to Frank Lloyd Wright, I was on my way from Taliesin in Wisconsin to Taliesin West in Scottsdale, Arizona, with another apprentice, John deKoven Hill, who had supervised the stonework for the house. Wright had finished it in 1948 for a family who wanted a vacation home with four bedrooms, three baths, and a separate servant's room and bath in a remote valley in the Southwest.