found: Industry Research Seminar, c1980:t.p. (Chicago Board of Trade) verso t.p. (copr., Board of Trade of the City of Chicago)
found: Union Pacific Railway, Eastern Division, 1868:t.p. (Board of Trade of Chicago)
found: Stock index futures, c1987:t.p. (Chicago Board of Trade) cover (CBOT)
found: My word is my bond, c2008:CIP t.p. (Chicago Board of Trade) introd. ("No longer is there a single entity known as the Chicago Board of Trade. In 2007, the CBOT was acquired by the Chicago Mercantile Exchange. In their merged form, they have created a new company called CME Group, Inc.")
