@Greg Cox, did you put together the Tor edition of Matheson's Bid Time Return / Somewhere in Time?
I handled our original trade paperback edition, along with most of our Matheson reprints back in the day. I also assembled several new Matheson collections and edited four of his later novels: Seven Steps to Midnight, Now You See It, Hunted Past Reason, and Other Kingdoms.
And, yes, I made the call to publish it as Somewhere in Time, not Bid Time Return, since the movie title had long ago eclipsed the original book title at that point. Ditto for publishing The Shrinking Man as The Incredible Shrinking Man, since the movie title was much better known.
With Richard's permission, of course.