Original vintage architectural trade magazine ad for UNITED ELECTRIC COMPANY of Canton, OH. TUEC Stationary Air Cleaning System specified by Holabird and Roche. Woodmen of the World Building in Omaha, NE and the Residence of Mrs. Lawrence D. Rockwell, Lakeshore Drive in Chicago are equipped with the TUEC Stationary Air Cleaning System. No matter where your building is located, what size or age, or whether it is wired for electricity or not, there is a TUEC perfectly designed to meet your requirements. Old 1912 construction industry advertisement.