A couple of my stories:
Superman, What? (set in my
Missing Lois universe), and
The Superman Effect (an extra vignette of my
Wrong Trilogy) while set in universes of some other stories also work as stand-alone stories.
Green-Eyed Monster precedes
Nightfall Honeymoon (currently clogging up Labby's GE mailbox.)
Book 1:
Another Dimension, Another Time, Another Lois (also about to be returned from GE to Labby) precedes Book 2:
Wrong Place, Wrong Time, Wrong Clark (WIP) of my Wrong Trilogy. (I haven't come up with a title for Book 3, yet.) But I've already warned Labby of that they are part of a series.
While
Lois Rules! - A Story goes hand-in-hand with
Lois Lane - A Handbook I don't think they count as a series. (Although, I do have a sequel for
Lois Rules! - A Story in my plot bunny slush pile.)
Just a Little Too Far and
Just a Little Too Much are not a series, but they both start out the same, but end differently.
Maybe you could ask writers to note when submitting stories to the Archive (in the comments/notes section) or add a check-box to the submission form, should the story be part of a series or a sequel to an already submitted story. (My guess is that sometimes when the first story is submitted to Labby, the writer doesn't know that he/she will write another story in that universe or a sequel.) I try to make such a note when submitting stories to the Archive.
