- All
- Huron (South Dakota), 55 results
- Washington (D.C.), 12 results
- South Dakota -- Sioux Falls, 8 results
- South Dakota -- Aberdeen, 6 results
- South Dakota -- Rapid City, 4 results
- South Dakota -- Brookings, 3 results
- South Dakota -- Mitchell, 3 results
- Black Hills (South Dakota), 3 results
- Union Center (South Dakota), 3 results
- Madison (South Dakota), 3 results
- All
- Agriculture, Cooperative, 177 results
- Radio in agriculture, 36 results
- Forensice (Public speaking), 34 results
- Home economics -- Study and teaching (Higher), 26 results
- Early childhood education -- Study and teaching, 26 results
- Consumer education -- Study and teaching (Higher), 26 results
- Agricultural laws and legislation, 16 results
- Camps, 11 results
- Agriculture -- Societies, etc., 6 results
- Purchasing power parity, 6 results