Why did Frank Lloyd Wright keep the drawings he planned to forget?

Why do the vintage American System Built Homes (ASBH) plans exist at all? Frank Lloyd Wright didn't plan to re-use or show them. Was his decision to store almost 1000 drawings based on nostalgia or pride, or something more practical?

Presentation: Frank Lloyd Wright Vs. Russell Barr Williamson

In the wake of the failure of the American System Built Homes project, in which Wright and Williamson had invested over 3 years of mutual effort, the men never spoke again and, tellingly, erased the experience from their professional and personal Curricula Vitae.

Caring for the Forsaken

We bought Frank Lloyd Wright's Elizabeth Murphy House with a plan to restore and care for her, but quickly discovered a curious and unexpected form of stewardship. Like nuns in a 19th century orphanage, we find ourselves caring for the forsaken.

Kids, what do you see in Mr. Wright’s art glass windows?

Matthew Smith - an expert in fine leaded art glass - points out that Frank Lloyd Wright's motif in the Elizabeth Murphy House reflects the proportions of the Elizabeth Murphy House herself.