Board Thread:General Discussion/@comment-43505-20161008233233/@comment-220364-20161010203124

Some thoughts and questions: The best that gives us is that: As far as the Superboy and Superbaby articles go, we have them listed as Earth-One. And the alter egos are listed as the same as the Earth-One Superman. They are the same character and should not be split up.
 * ABSCOIE is DC's annotation of Crisis.
 * Does it list Earth-154 and Earth-216 separately?
 * If so, have we conflated the two?
 * Superman/Batman: Saga of the Super Sons is DC collecting one set of stories. It is a good indication that the stories reprinted represent a single continuity as far as DC is concerned. However, that seems to be Earth-216 in its entirety depending on the questions above.
 * The speculation of IGC's The Official Crisis on Infinite Earths Index is trumped by what DC put into ABSCOIE. What wasn't carried over amounts to fanspec.
 * We work with what we have, which is:
 * DC decided that the golden age Superman is Earth-Two and the silver age (modern at the time) superman was Earth-One.
 * There is no clear break in the Superman stories for the lat 1940s until 1959. Determining which stories belong to which continuity is down to "best guess" in most cases.
 * DC also decided that the Superman of Earth-Two did not have costumed adventures until he was an adult. Therefor no Superboy or Superbaby.
 * DC itself has not provided a list of what stories from that period are in canon or which continuity to which they belong.
 * It has been long acknowledged that some of the stories are representative of both Earths.
 * The stories involving Superboy from that period are Earth-One. Even if it is clunky as heck.
 * Superman stories that reference Superboy are Earth-One.
 * Superman stories that seem to contradict previous Earth-Two stories are Earth-One.