Wonderful older photos that aren't in my library show up on my screen saver. I would love to be able to get to them! I currently use 10.9.3, but this has been happening for a long time.
MacOS – Find lost photos that show in screen saver
librarymacosphotosscreensaver
Best Answer
Photos in the screen saver come from the source that is selected in System Preferences → Desktop & Screen Saver. This means that your missing photos will be in whatever source has been selected there.