Air conditioning
In 1902, the first modern electrical air conditioning unit was invented by Willis Carrier in Buffalo, New York. After graduating from Cornell University, Carrier found a job at the Buffalo Forge Company. There, he began experimenting with air conditioning as a way to solve an application problem for the Sackett-Wilhelms Lithographing and Publishing Company in Brooklyn, New York. The first air conditioner, designed and built in Buffalo by Carrier, began working on 17 July 1902.
Famous-Barr
Famous-Barr was created in 1911 through the merger of The William Barr Dry Goods Co. and previously May-owned The Famous Clothing Store. Famous-Barr was the first air conditioned department store in the United States. The store opened in Downtown St. Louis in 1914.