From Don Curtis #2

This is the 1949 Spec going in the back door which was actually an "end " door being located just past the lace line on the round end of the tent. Traditionally the band and back doors were located directly behind the center ring but it occurred to someone that this area, in the proximity of the center ring, was choice Real Estate and if seats had to be sacrificed, let it be the back end blues (General Admission). So with the band and backdoors removed you now had two unbroken rows of seat wagons both front and back.