Hey, ideas about Spock's age were in flux at least until "The Counter Clock Incident" where he de-ages far slower then the rest of the crew, implying his age to be much closer to that of the 75-year-old Captain April than the others.
I'm not sure when they actually decided he was contemporary with Kirk, but the first licenced publication to say so was probably the Star Trek Chronology in 1993.
I'm not sure when they actually decided he was contemporary with Kirk, but the first licenced publication to say so was probably the Star Trek Chronology in 1993.