I was watching some Voyager on Netflix, and I recalled that my father was a Star Trek fan back in the day. He even created some oil paintings back in the early 70s, 'fore I was even born. Some of the paintings were made into large limited edition prints and sold by a Star Trek merchandise vendor . . . I have a folder with some of the old paperwork. I don't know where the originals went, but I know one was sold at an early sci fi convention in '74. All that's left are a few photographs of the original paintings, which I went and scanned.
This one is called Standard Orbit, and is the one that sold.
I don't know the title of this one.
But this one is called Encounter, though the photo glare made the Klingon ship all fuzzy.