Residential buildings account for a large portion of total energy consumption in the United States. Residential energy usage can be dramatically reduced by improving the efficiency of building envelope systems. One such method is to incorporate...
Louisiana Purchase Exposition (1904 : Saint Louis, Mo.); Exhibitions; Airships
Two balloons, one of them only partially filled, in a large, beamed room at the World's Fair in St. Louis, Missouri. Stamped on lower left corner: 10969.