“The Dinosaur Exhibit built by the Sinclair Refining Company at the 1933-34 World’s Fair in Chicago is the first attempt to recreate out-of-doors a portion of the earth’s surface and animal life as they existed 100 million years ago. Brontosaurus reproduced life-size is the largest animated animal in the world. In life he bulked 40 tons and was 70 feet long.”
This was a very fun and popular exhibit at the fair. It was located next to the Firestone Building and the Garden of Comfort. Sinclair Oil Company wanted their exhibit to have dinosaurs at the fair because during the Mesozoic Age, when dinosaurs existed, oil was formed. Ferns and palms that the dinosaurs used to eat would turn into oil when they fell away and were under pressure.
The dinosaurs, including a stegosaurus, T-Rex, and protoceratops among others, had moving heads and eyes. The dinosaurs had a steel skeleton and were covered in plaster, cloth, and rubber. These dinosaurs proved challenging to make for the creators because they had to last outside for a long period of time and hold up in the rain.
Fun Fact: In the show Dinosaurs, the baby is named Sinclair.