Chicago Board of Trade v. Christie Grain & Stock Co.
Chicago Board of Trade v. Christie Grain & Stock Co., 198 U.S. 236 (1905), was a decision by the United States Supreme Court, which upheld sales of American grain for future delivery provided for by the rules of the Chicago Board of Trade of the state of Illinois.
Source: Wikipedia — Chicago Board of Trade v. Christie Grain & Stock Co. (CC BY-SA 4.0)