Turing points in history is a wide theme and can be interpreted in many ways. Below are a few sample topics of turning points related to South Dakota.
Most of the databases listed in the Databases tab on this page are available to anyone. Some of them may be limited to use by South Dakota State University students/faculty/staff or in the library building.
Below are some databases that have South Dakota related documents:
These databases will help you find articles on your topic. They are available from the South Dakota State Library and are available for any South Dakota Resident to use.