files = Import["~/blog/faces94/male"][[1 ;; -1 ;; 30]];
faces = Map[Import["~/blog/faces94/male/" <> #] &, files];
I can't find any documentation that explains how to use Import in this way. I'm trying to use the notebook from this website: http://jeremykun.com/2011/07/27/eigenfaces/
The github page is here: https://github.com/j2kun/eigenfaces