The reason why no one responded to this thread is fairly obvious. You really need to do real backups for your computer(s) on a regular and consistent basis such that you may retrieve lost or missing files. You also should have records for when and from whom you licensed software including fonts. Did you license the fonts directly from Adobe? From ITC? From Monotype via fonts.com? Elsewhere? And to make things even more complex, there are not only mulitple styles within the ITC Stone Serif font family, but there are different versions with different character sets supported from various font vendors/foundries.
Clearly, there really is no way that you can magically retrieve the font files. Sorry!
By the way, you don't own the fonts, but rather, you purchased a license to use the fonts.