Date for scanned pictures not showing

I need Date Created to show in my metadata all the time. How do I do that for scanned pics?
If the pic is from a digital camera, all is fine:

For my scanned pics I have no way to show it. What I currently do, is look at the name of the image, then go to my MAC Finder, search for that name, and look at the time stamp of the file. So, I'd like to somehow see the file created timestamp on my Lightroom Metadata. How? I'me pretty sure it was there a few updates ago but no more!

The Metadata Customize Panel also has all kinds of things including the file name, file size etc etc, but not file date. Why? That's what I need!