In 1912, George Eastman established the Research Laboratories at Kodak Park in Rochester, New York. It was crucial that new inventions and improvements in the photographic industry happen at his company. Around this time, the company introduced portrait sheet film for professional photographers. Some of the company’s innovations in optics and chemicals were used during World War I in warplanes, aerial cameras, and other military equipment. Eastman brought the best chemists and engineers from all over the world to manage and work in this important division of his company.