This adds the drive letter for the drive on which the shortcut resides, but what I need is the drive letter to the drive that the shortcut points to. However, if I create the shortcut on the drive that has the shortcut folder, then copy that shortcut over to the "shortcuts" folder, then this works.
Also, as you wrote it, it copies to whatever is the target folder, not the source folder. But this inspired me to dig into the COPY command and then the DELETE command to extend it to copy to the source folder, and to delete the files after making the new links. Great learning exercise that I would not have known how to get started on without your script. Here's what I ended up with: