The Anchor Line was a steamboat company that operated a fleet of boats on the Mississippi River between St. Louis, Missouri, and New Orleans, Louisiana, between 1859 and 1898, when it went out of business. It was one of the most well-known, if not successful, pools of steamboats formed on the lower Mississippi River in the decades following the American Civil War.
The company was founded in 1859 as the Memphis and St. Louis Packet Line, principally providing service to these two cities and points in between. Two years later, the American Civil War broke out. Whereas many steamboat owners were forced to cease operations at the outbreak of hostilities, the Memphis and St. Louis Packet Line managed to remain in business by operating on the parts of the Mississippi River occupied by the Union forces. By the spring of 1862, this included all parts of the river as far south as Memphis. One year later, all ports on the river except for Vicksburg, Mississippi, and Port Hudson, Louisiana, were under Federal control. On 4 July 1863, Union forces under Ulysses S. Grant forced the Confederate garrison commanded by John C. Pemberton to surrender Vicksburg, and the next day, Port Hudson surrendered, opening the river to commercial steamboat traffic.
In 1874, the company adopted the giant anchor as its symbol (and presumably changed its name at that date). In any case, by the mid-1870s it was known as the "Anchor Line." The anchor was prominently hung between the two tall smokestacks on each of its boats. It was also included as a logo on the furnishings of many of its boats, including the chairs manufactured for the boats' cabins.