These are pictures taken in 1958.  They were used for placing this unique house in the "Historic American Building Survey".  This project is under the jurisdiction of the U.S. Park Service. 

 

From their web site...

America's historic buildings serve as tangible evidence of our nation's past, reflecting an architectural heritage as diverse as our ethnic and cultural backgrounds. From the hand-hewn, timber-frame Saltboxes of the colonial period to the steel-beam constructed office towers that dominate today's urban skylines, the architectural forms of each era are built on those of the past, with every successive development constituting a vital link in the progression. It is the mission of the Historic American Buildings Survey (HABS) to properly record these structures in order to better understand what they tell us of the past, and to insure their recognition by future generations.