Chicago Board of Trade Building opens its vault to the public for the first time in its 83-year history

Chicago Board of Trade Building opened its vault to the public for the first time in its 83-year history.

October 17, 2013: Chicago Board of Trade Building Opens its Vault — WGN

October 18, 2013: Chicago Board of Trade Building Opens its Vault — WMAQ (NBC 5)

October 20, 2013: Chicago Board of Trade Building Opens its Vault — WMAQ (NBC 5)

October 20, 2013: Chicago Board of Trade Building Opens its Vault — WLS (ABC 7)