Keller Crescent Co. at 1100 E. Louisiana St. A printing and advertising firm, "the company is deep-rooted in the city�s history. William H. Keller, who served three terms in the Civil War for the Union and climbed to the rank of captain, started the Keller Printing Company in October 1885. In 1906, the company merged with Crescent Printing to form Keller-Crescent. The printing and advertising agency grew to become the top advertising company in the state and was in top 30 in the country for decades. (http://archive.courierpress.com/business/local/former-keller-crescent-facility-to-close-eliminating-150-jobs-ep-1081236136-324568061.html) For many years the company was in the downtown/riverfront area, but it moved to the location shown here in 1961. It went through several ownership changes, and by the time it closed in 2015 it was known as Essentra. This building still stands.