National Geographic : 1915 Sep
F VERMIN DECAY CRACKED PLASTER Banish the Evils of Wood Joists and Studs Use Kahn Pressed Steel IF YOU build outside walls of permanent, fire-proof construction, why be satisfied with wood joists and studs inside ? 41The approved modern method eliminates fire danger, vermin, decay, and the troublesome cracking of plaster. Kabn Pressed Steel Joists and Studs make floors and partitions that are easy to build, low in cost, and last forever. Built as safely in coldest winter as in summer. HYRIB 4J No forms, centering or special equipment is needed, but only the use of Hy-Rib, to which the plaster or concrete is applied. AEE Kahn Pressed Steel construction is giving complete satisfaction in STEEL stores, schools, apartment houses, office buildings, residences, etc. STUDS It increases sales and rental values and lowers maintenance costs. IMPORTANT.-Before building, learn about this splendid type of modern construction. Let us send you special Pamphlet B 78. Write today. TRUSSED CONCRETE STEEL CO. Youngstown, Ohio Representatives in Principal Cities. KAHN PRESSED " P~j STEEL I-BEAMS iBSXVS AIR MOISTENER FOR HOMES, OFFICES, SCHOOLS, HOSPITALS Fill with water and hang on back of any radiator, out of sight. Converts dry indoor air into a moist, healthful atmosphere. Saves health, interior woodwork, furniture, pianos, wall paper, paintings, books, plants, etc. Money refunded if not satisfactory. Three sizes, $2.00, $1.75, SXVO MANUFACTURING CO., 320 N. Y. Life Bldg., Chicago, Ill. "Mention the Geographic-It identifies you."