So if you DELETED your images from their original location in your computer- they are gone, gone, gone! Did you have Backups of your master image files?
If you MOVED your images from their original location in your computer- they are somewhere else that Lightroom does not know about and cannot find them.!
If you RENAMED your images (or Folders) in their original location in your computer- Then Lightroom does not know their new names and cannot find them.!
If you know that your original master image files exist in your computer and you know WHERE they are, then it may be possible to re-link them in Lightroom. Adobe Photoshop Lightroom Help | Locate missing photos
If they have been permanently deleted (looked in the Recycle Bin?) you will only be able to restore tiny thumbnail preview images from Lightroom using extra software. (LR does not contain your master images!)
Thank you so much for your reply! I will check to see if the photos backed up to my iPhoto Library...or somewhere. Thanks again for your quick response...I'll keep looking for them!
.I'll keep looking for them!
I have to question the wording here, maybe you are saying you will do exactly what I think you should do, but your words don't convey that meaning to me.
You, the human user, should NOT be "looking" for these photos. This is not how to search for photos.
You need to have your operating system perform a search all of your hard disks for these photos by file name. If that's what you mean, then I apologize for jumping in. If that's not what you mean, then you should do this.