Visit this Usonian house designed by Frank Lloyd Wright in 1939
"The Pope-Leighey House is a "Usonian" house which represented Wright's vision of affordable, well-designed housing in a democratic America. The low cost was attempted, in part, by the conventional means of reduction in size, and the use of four basic materials-- wood, brick, concrete, and glass. The reverse board-and-batten "sandwich" walls were an attempt to simplify construction by fabricating the exterior and interior walls as a complete unit. Wright designed the floor plan on a 2' x 4' grid which saved on costly on-site estimation."
