The copyright owners (Activision?) probably doesn't even have copies of these games.

I don't know if this have any significance for ScummVM, but the Time Zone disk-images included on The Roberta Williams Anthology have an error which makes the game impossible to complete if you don't use the particular beta-version of AppleWin included on RWA. I don't remember the exact error, but I...

There is a disk-image of Cranston Manor available on moderatorial: warez link removed.