Petroleum. Nos. 75-80, in Commerce Court, Prairie Oil & Gas Company v. United States [and] Interstate Commerce Commission; Uncle Sam Oil Company v. same; Robert D. Benson et al., doing business under partnership name of Tide-Water Pipe Company, Limited v. same; Ohio Oil Company v. same; Standard Oil Company v. same; Standard Oil Company of Louisiana v. same, on application for preliminary injunction; brief on behalf of commission.