Where are Windows 10 previously used background images stored (Path/Source)?

Question

This is different from the numerous previously asked questions about desktop background image's path. The question is exactly same as the title.

I want previously used desktop background's path. It is like this for more detail -Where the first image is desktop background and others are previously used ones (link to the image). The first one is desktop background while rest four images are previously used. I want to know the path of rest four.

Answer 1

I figured it out later.

The path is HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Wallpapers in regedit. Reference: How to delete a desktop wallpaper in Windows 10? answered by Magnus.