Notes:
The indicia title is DC COMICS PRESENTS: ELSEWORLDS 80-PAGE GIANT, but the cover title is DC COMICS PRESENTS: ELSEWORLDS 100-PAGE SPECTACULAR (which fits better given this has 100 pages in it).
This reprints Elseworlds 80-Page Giant (DC, 1999 series) #1 (which had very limited distribution due to most of the print run being pulped), and also one story from The Batman Chronicles (DC, 1995 Series) #11.