Hi John, my name is Jose, a Windows user like you. I'll be glad to help you today.
The path to get previous Windows Spotlight images is:
%userprofile%\appdata\local\Packages\Microsoft.Windows.ContentDeliveryManager_cw5n1h2txyewy\LocalState\Assets
Here you'll get a list of file without extension. Bigger files are Windows Spotlight images. You can copy then to other location then add the .jpg extension.
The information about those pictures is not available because those file are ciphered.
Please let me know if you need any further assistance.