324 U.S. 548 (1945) Cited 172 times
Holding the Railroad Commission's error harmless "in the absence of any showing of . . . prejudice" by the petitioners who made "[n]o contention . . . that the information was erroneous or was misunderstood by the Commission, and no contention . . . that the Company could have disproved it or explained away its effect for the purpose for which the Commission used it"