I just found this funny because it reminded me of all the people on the floor goofing off. There were always laughs to be had. This video is one guy clowning around the S&P pit as the interest rate bells signal the close.
The following collection of CBOT memberships is from a 1884 yearbook published by the brokerage firm Clapp & Company. It is noted that "Tickets of 1858 to 1871, inclusive, were in my safe during the Chicago fire of October 8th and 9th, 1871, therefore discolored. O.W. Clapp" As usual, you must click on the picture to see detail.
This patch of the New York Cocoa Exchange logo is probably from the 1940s or 50s. I obtained a large amount of memorabilia from that era but this is the only thing trading floor related.
Pictured below is the floor plan of the Chicago Board of Trade from 1930, a year after it was built. If you click on the pictures, they enlarge to where they can be read better.