Did some photo research and the box-office appears to have moved sometime in the mid-to late 1960s, so side is probably right. Looks like the center thing was positively gone by 1970, but I think it was more like 1967 or thereabouts.
That would have been helpful, since everyone SWEARS they saw it at the Dome when it first came out. And you tell them they're wrong and they argue about it. And you present them with photographic proof and they still don't believe you. And you present them with the factual information of what...
I saw it in 70mm at the Dome - nothing looks very good there, unfortunately. I enjoyed it, thought it went on too long, and was occasionally taken out of the 1969 by mistakes in the art direction, which I understand were probably Tarantino just reliving what HE liked in the 1970s and they do go...