Anyway to find out what images are in use in my project?

Hello,

me being the bad organizer I am (Will definitely organize in the future) Is there a way to find all the image files use in a timeline or project so i can delete the ones off my working hard drive that aren't part of the timeline or project? I was stupid and now have about 30 duplicates of the same images and can't tell which one is the one that is connected to my project.

thanks,

Bryce