"Star Wars Sequel
On February 23rd, it was announced that Star Wars Corporation will begin production on the sequel to Star Wars this summer. The title has not been selected yet, but it will not be Star Wars II.
Based on the second of twelve stories in George Lucas’s Adventures of Luke Skywalker series, the first draft of the screenplay was written by Leigh Brackett."
He claims to have started at episode number 4 of 6 - or - 4 of 9, depending on which interview he happened to give over the years. Yet, here in his official newsletter, it specifically states that Star Wars was number 1 of 12.
That's odd - mid 1978 and still no mention of Episode 4. You'd think that having decided against putting Episode 4 on the opening titles of Star Wars - err, uh, I mean - having been forced by the studio to leave it off of the opening titles, that he would have at least mentioned it in his sequel announcement.