Looks good to me, Klar! Supergirl, Superboy, Krypton, and you.
The Superman 2965 entry got me thinking. Now I know he is your area of expertise, but why mention the fact that there was never a Superman 2965/LSH crossover, or theories about Mort Weisinger and why there wasn't? I kind of like the approach that Michael Fleisher took, and wonder if we should stick with it:
In the writing of this encyclopedia, certain conventions were employed. Superman and all the other characters appearing in the chronicles were treated as though they were real people, and the adventures were treated as though they were actual historical events. The comic books containing the accounts of Superman's exploits were studied as though they were historical documents chronicling the lives and adventures of actual persons.
So when you get into speculation about why certain stories were written certain ways, you break the reality.
He continues:
The legend of Superman is elaborate and complex. Individual comic book sources sometimes differ in recounting a given set of events, and sources can often be found to support conflicting sets of "facts." In cases where comic book sources were discrepant with regard to particular details of Superman's life and career, an effort was made to reconcile the discrepancies in light of the total data available. A fact attested to in several comic books was accorded more weight than a contradictory fact stated in only one comic book. A statement made in a comic book concerning a contemporary event in Superman's life was accorded more weight than a contradictory statement concerning that same event made years later in the form of a recollection or flashback. Wherever strong support exists in the texts for opposing sets of facts, the evidence for both is examined in detail in this encyclopedia.