Minimap icons

Hi! I would really appreciate any help with this since I'm totally stuck!

I'm working on a project to analyze data in league and need to find the source image file for the ward icons on the minimap. I.e. the tiny images that show up on the minimap when you place a vision ward or totem (one looks like an eye, one like a totem)

Can anyone help?? I've scoured the League files and can't find the images!

Thanks!!