"Designer Michael Reynolds Stands Next to an Interior Wall in One of the Structures. The Inside Walls Are Built with Cans in the Position Shown. The Outside Walls Are Constructed Using an Eight Can Unit as a Building Block. (See #14164) Some 70,000 Cans Are Needed to Build a House Which Reynolds Says Can Be Built as Much as 20% Cheaper Than Conventional Homes, 06/1974" by David Hiser for DOCUMERICA