Below is a funny comic panel from fanzine "Enterprise Incidents"(#6, September 1978) that illustrates the frustration that Nimoy (and Mr. Spock) must have felt over the mistake! Another thing that used to get under my skin, and was certain to elicit a quick (and snarky) correction from me, was someone calling the show "Star Track."
tag link for more) from -again- the same issue of E.I. I love this guy's work, and wish I could hear from him!
I used to wonder occasionally, upon hearing an ignorant person use the "Dr." title for Spock, if the actual Dr. Spock ever got tired of dealing with kids asking him where his pointed ears were. One can only hope.