Dollar General Corp. is a U.S. chain of variety stores headquartered in Goodlettsville, Tennessee. As of January 2011, Dollar General operated over 9,300 stores in 35 U.S. states. The stores were founded in 1939 by Cal Turner in Scottsville, Kentucky as J.L. Turner & Son, Inc. In 1968 the business changed its name to Dollar General Corporation. In 2007 the company was acquired by the private equity firm Kohlberg Kravis Roberts & Co. (KKR), which took the company public in 2009.