"Why not add twenty years of health?" asks this brochure for Celotex fiberboard insulation. How can you do this? By spending more time relaxing in the great outdoors after constructing an affordable, comfortable, well-insulated summer cottage made of Celotex. "The entire cabin, except the framing, roof, and floor can be built with Celotex. The strength, stiffness, and texture of Celotex make is especially fitting for side walls, ceiling, roofs [yes, they did just say you couldn't use it for the roof], partitions, and interior finish and trim." To help you envision yourself in a charming Celotex cottage, they would provide free blueprints for any of the cabins pictured here. It all sounded great in the 1920s. Unfortunately, one of the main components of Celotex was asbestos--making it more likely you'd lose twenty years of health than gain them by spending your summers in in a Celotex home. 3.5" x 6" brochure, unfolding to 12" x 13.75". Near fine, with minor handling wear.