I have a hard time following all the various business manifestations of Harvey Comics--after going on for decades, they closed down, got bought out I think, came back, went away again...reams of legal paperwork, I'm sure.
Anyway, this series started in 1987 and I think was part of the first "comeback" for Harvey and its stable of superstars(Richie Rich I think remains, by sales and number of titles, the single most popular comics star, ever).
There's no table of contents for this issue, and the GCDB offers no info, so I can only guess this series was made up of reprints--they would've been crazy not to, considering the sheer volume of material they had in their archives.
The stories star all the chracters from the Casper family, like Wendy the Good Witch, Spooky, The Ghostly Trio, and of course the dead-child star himself.
This series lasted eighteen issues(hey, longer than Spidey!), and even though Casper never returned to comics full-time, he did eventually become a movie star, so I don't think he'll be gone forever.