why is he never discussed at all, in any of the many books or documentaries that have been made about the behind-the-scenes aspect of the film?
IIRC, Allan Asherman's "The Making of ST II" discusses his involvement, and I think either Sallin or Bennett discussed Sallin's work on ST II in Starlog.
From memory, he was the one who watched TMP to work out what stock footage, models and wardrobe items could be reused for ST II to save maximum money.
says, "Robert Sallin
was the producer of Star Trek II: The Wrath of Khan
. He was given the job of making this production with a much smaller budget than was used to make Star Trek: The Motion Picture
. Among his achievements was changing the Starfleet
costumes from the one-piece jumpsuits of The Motion Picture
to the more comfortable uniforms seen in Star Trek II
and subsequent films. He also ensured that James T. Kirk
received his famous dramatic entrance. Star Trek II
is the only film Sallin has produced.
"During the 1958-59 television season, Sallin served as a production assistant on NBC
's adventure series Steve Canyon
. He went on to direct the 1969 Warner Bros/Seven Arts drama The Picasso Summer
, which was TOS
guest star Theo Marcuse
's last film. He later directed episodes of the CBS
shows The American Girls
and The Mississippi
, and two episodes of the NBC series Riptide
, including one with Miriam Flynn
"Most recently, Sallin was a Second Unit Director on the 1995 Warner Bros. action film Assassins
. Stephen Liska
was a cast member in this film, which featured art direction by Nathan Crowley