Board Thread:Episodic and Issue Discussion/@comment-1038387-20190118171753/@comment-1038387-20190119221716

Green Lantern #10, 1942. For sale here.

The story doesn't make much sense, but it has to work in a frame of reference for a 1940s child. They won't know much history, and won't question in.

Aside from the mentioned Khan/Conqueror discrepancy, it also makes him a million years old, but identifies him as Cro-Magnon, which was 40.000 years at most.