Question: Who was the first Elder to appear in Elders of the Universe?
Sentence (from "Elders of the Universe"): The Collector was the first Elder to appear, and featured in "Avengers" #28 (May 1966), but the idea that he was a member of a group known as the Elders was not introduced until "Avengers" #174 (August 1978).
Relevant evidence: No