Sinclair gasoline has been sold since the early 1900's, and is one of the oldest brands still in use. It's also well known for it's green dinosaur logo, which dates to the 1930's. Sinclair sponsored a dinosaur exhibit at the 1933-34 Chicago World's Fair, to demonstrate the correlation between gasoline and the age of dinosaurs. The exhibit included a big, animatronic Brontosaurus, and led to a popular line of Bronto promotional toys given away at the stations. The rest, as they say, is history, and Dino became the company's mascot. This station, in Wisconsin Dells, even features a big Dino the Dinosaur straddling the station's entrance.