Trade Catalogs on Boilers: Standard and Horizontal Return Tubular Boilers, Vertical, High Pressure, and Water Tube Boilers (vertical Headers), Internal Furnace Boilers, Portable Boilers ; Steel and Brick Casing Settings ; Boiler Specialties ; Tank, Plate and Structural Steel Work: Standard Pressure and Gasoline Tanks, Elevated Structural Steel Tanks and Towers, Water Tanks, Standpipes, Oil, Gasoline and Coal Tar Storage Tanks, Large Storage Tanks, Mixing Tanks, Structural Steel Supports, Conveyor Bridge and Coal Storage Bins, Structural Steel Cast Houses, Industrial Plants, Crystallizers, Blast Furnaces, and Self-supporting Steel Smoke Stacks