Well, it does have a lot in common with the Story of the Empire Strikes Back album. Many of the alternate takes are there in both, including the many of Carrie Fisher on the Falcon. The odds seem to be good that both are from the 70mm. The beauty of the 8mm reels is now we can see visual differences as well. Of course, since it his heavily edited, not always razor sharp on the details and is pan and scan, we need to be extra careful when relying on it for differences.