Rapid City, South Dakota City had survived a boom and bust and was establishing itself as an important regional trade center for the upper midwest. Although the Black Hills became a popular tourist destination in the late 1890s, it was a combination of local efforts, the popularity of the automobile, and construction of improved highways that brought tourists to the Black Hills in large numbers after World War I. Gutzon Borglum, already a famous sculptor, began work on Mount Rushmore in 1927 and his son, Lincoln Borglum, continued the carving of the presidents' faces in rock following his father's death in 1941. The work
Corpus Christi Bay semi-arid and is used for ranching and other agricultural purposes. The bay itself is considered subtropical, and was described by Gutzon Borglum as "the most beautiful bay on the Texas coast." On average, the system is deep, and covers approximately . It is the fourth largest estuarine system in Texas behind Galveston Bay, Laguna Madre and Matagorda Bay. The two main extensions are: Nueces Bay, which extends west to the mouth of the Nueces River, and Oso Bay, which extends south to the mouth of Oso Creek. Every second, approximately of water flows into the bay. The exchange with the