The 70mm Engagements Of The Original "Star Wars"
This page is useful or maybe not here s whats on the page:
What follows is a listing of 70mm Six-Track Dolby Stereo engagements of "Star Wars" (known today as "Star Wars: Episode IV -- A New Hope"). Standard 35mm engagements, in which the film was also released, have not been included. For historical note, the newspaper advertising hype has been quoted for selected entries.
As one can glean from the list, 70-millimeter engagements were kept to a minimum during the initial wave of release. Despite frequent moviegoer memories to the contrary, it was during the subsequent months of release that most theatres (that ran the film in 70mm) received a 70mm.
Also there is another page called:
May 25, 1977: A Day Long Remembered
Hope this is useful to all wondering about 70mm i found it intresting