“ There are no liquor distilleries in Oklahoma. Liquor is shipped in from other States to the warehouses of the wholesalers, where it is inventoried and held until purchased by retailers. The District Court and the Court of Appeals found that the liquor 'came to rest' in the wholesalers' warehouses and that interstate commerce ceased at that point. Hence, they concluded that the wholesalers' division of the Oklahoma market did not take place 'in interstate commerce.' But whatever the validity of that conclusion, it does not end the matter. ”

“ For it is well established that an activity which does not itself occur in interstate commerce comes within the scope of the Sherman Act if it substantially affects interstate commerce. United States v. ”