Most of the article is concerned with his work on ST:TMP, which expanded the look of Trek universe from the low-budget TV series to motion-picture quality detail and design. Sharp-eared fans (pun intended) may have heard his name used on-screen in TMP, during the subspace radio chatter that was audible over the Epsilon Nine outpost exterior scenes. "Commodore Probert" was the officer named by the voice that was relaying orders for various ships... ships that even more attentive fans may have noticed as having been named and numbered in the Star Fleet Technical Manual!
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Bonus #2: A pensive-looking Kirk is featured in a publicity still taken during the filming of the third-season clunker "Spock's Brain."