​​Original oil and gas vintage magazine ad for APPLETON ELECTRIC COMPANY, safe Mercury Vapor lighting fixtures.  Explosion proof for hazardous areas.  More light, lower operating costs.  Used in refineries, chemical plants, coal mines, grain elevators, paint factories and other types of businesses.  Ceiling, pendent, long bracket and short bracket mounting.  Main office was located at 1701 Wellington Avenue, Chicago, IL.
This 1959 one page old petroleum industry trade advertisement would display beautifully matted and framed.