Prototype stepped parallel elevations

[up1950s]

http://3.bp.blogspot.com/-mINcV0bup5A/Teel7xg1SeI/AAAAAAAADPM/7kex32gFBCE/s1600/IMG_3815.JPG

Scranton , Pa from here http://www.google.com/imgres?imgurl=http://3.bp.blogspot.com/-mINcV0bup5A/Teel7xg1SeI/AAAAAAAADPM/7kex32gFBCE/s1600/IMG_3815.JPG&imgrefurl=http://andypalumbo.blogspot.com/2011_06_01_archive.html&usg=__6tAOO75U8XZ-UhDyr_AY0u_wUss=&h=1200&w=1600&sz=534&hl=en&start=23&sig2=XTgrvMAwFQ9kt7tGISgrOQ&zoom=1&tbnid=7QCNpJKg6mwZaM:&tbnh=113&tbnw=150&ei=JF6kT7uTA4jN0AGsnpm-BQ&itbs=1