- After 70 horses die, Oklahoma rodeo owner suspects feed was contaminatedCBS News
- Dozens of horses dead at historic Elk City ranchKFOR Force in Oklahoma City
- Oklahoma rodeo company blames contaminated feed for killing up to 70 horsesABC News
- More than 40 horses die on Oklahoma ranch after eating potentially contaminated feedThe New York Times
- Farm officials investigate whether animal feed shipment killed dozens of rodeo horsesSalina Post
