These differences in the drawings could simply be cases of the artist adding some color to an otherwise sterile (and recognizable) background.
As far as connections go, I'm finding that after my first couple of views I scan past those drawings...quite rapidly.
We have four grand daughters in and around that age group and I find that I'm reminding myself of the dictum about "Anger adversely affecting both concentration and aim."
End of comment.
:: These differences in the drawings could simply be cases of the artist adding some color to an otherwise sterile (and recognizable) background. ::
I think it has been determined that there are 2 pools. 1 is at the Biltmore, the other is implied to be in Rome.