The Havoline Thermometer was part of the 1933 International Exposition in Chicago, Illinois. As the Worlds Largest Thermometer, it was a very large advertisement Havoline Motor Oil. Twenty-one stories (218 ft.) high it showed the temperature by neon light tubes.
The original postcards says, “Sponsored by Indian Refining Company, Lawrenceville, Ill. makers of WAXFREE HAVOLINE MOTOR OIL best for all cars, winter or summer, because it contains no wax. Wax turns candle-hard with cold, water-thin with heat. Keep wax out of your motor! WAXFREE HAVOLINE MOTOR OIL IS SOLD AT ALL TEXACO STATIONS.”
I am personally fascinated by the imagination and achievement involved in creating a building like this to advertise waxfree motor oil. The postcard is a lovely example of the art deco period in Chicago.