File list (Check if you may need any files):
PCA_ORL
PCA_ORL\Data
PCA_ORL\Data\ORL
PCA_ORL\Data\ORL\s1
PCA_ORL\Data\ORL\s10
PCA_ORL\Data\ORL\s10\1.pgm
PCA_ORL\Data\ORL\s10\10.pgm
PCA_ORL\Data\ORL\s10\2.pgm
PCA_ORL\Data\ORL\s10\3.pgm
PCA_ORL\Data\ORL\s10\4.pgm
PCA_ORL\Data\ORL\s10\5.pgm
PCA_ORL\Data\ORL\s10\6.pgm
PCA_ORL\Data\ORL\s10\7.pgm
PCA_ORL\Data\ORL\s10\8.pgm
PCA_ORL\Data\ORL\s10\9.pgm
PCA_ORL\Data\ORL\s11
PCA_ORL\Data\ORL\s11\1.pgm
PCA_ORL\Data\ORL\s11\10.pgm
PCA_ORL\Data\ORL\s11\2.pgm
PCA_ORL\Data\ORL\s11\3.pgm
PCA_ORL\Data\ORL\s11\4.pgm
PCA_ORL\Data\ORL\s11\5.pgm
PCA_ORL\Data\ORL\s11\6.pgm
PCA_ORL\Data\ORL\s11\7.pgm
PCA_ORL\Data\ORL\s11\8.pgm
PCA_ORL\Data\ORL\s11\9.pgm
PCA_ORL\Data\ORL\s12
PCA_ORL\Data\ORL\s12\1.pgm
PCA_ORL\Data\ORL\s12\10.pgm
PCA_ORL\Data\ORL\s12\2.pgm
PCA_ORL\Data\ORL\s12\3.pgm
PCA_ORL\Data\ORL\s12\4.pgm
PCA_ORL\Data\ORL\s12\5.pgm
PCA_ORL\Data\ORL\s12\6.pgm
PCA_ORL\Data\ORL\s12\7.pgm
PCA_ORL\Data\ORL\s12\8.pgm
PCA_ORL\Data\ORL\s12\9.pgm
PCA_ORL\Data\ORL\s13
PCA_ORL\Data\ORL\s13\1.pgm
PCA_ORL\Data\ORL\s13\10.pgm
PCA_ORL\Data\ORL\s13\2.pgm
PCA_ORL\Data\ORL\s13\3.pgm
PCA_ORL\Data\ORL\s13\4.pgm
PCA_ORL\Data\ORL\s13\5.pgm
PCA_ORL\Data\ORL\s13\6.pgm
PCA_ORL\Data\ORL\s13\7.pgm
PCA_ORL\Data\ORL\s13\8.pgm
PCA_ORL\Data\ORL\s13\9.pgm
PCA_ORL\Data\ORL\s14
PCA_ORL\Data\ORL\s14\1.pgm
PCA_ORL\Data\ORL\s14\10.pgm
PCA_ORL\Data\ORL\s14\2.pgm
PCA_ORL\Data\ORL\s14\3.pgm
PCA_ORL\Data\ORL\s14\4.pgm
PCA_ORL\Data\ORL\s14\5.pgm
PCA_ORL\Data\ORL\s14\6.pgm
PCA_ORL\Data\ORL\s14\7.pgm
PCA_ORL\Data\ORL\s14\8.pgm
PCA_ORL\Data\ORL\s14\9.pgm
PCA_ORL\Data\ORL\s15
PCA_ORL\Data\ORL\s15\1.pgm
PCA_ORL\Data\ORL\s15\10.pgm
PCA_ORL\Data\ORL\s15\2.pgm
PCA_ORL\Data\ORL\s15\3.pgm
PCA_ORL\Data\ORL\s15\4.pgm
PCA_ORL\Data\ORL\s15\5.pgm
PCA_ORL\Data\ORL\s15\6.pgm
PCA_ORL\Data\ORL\s15\7.pgm
PCA_ORL\Data\ORL\s15\8.pgm
PCA_ORL\Data\ORL\s15\9.pgm
PCA_ORL\Data\ORL\s16
PCA_ORL\Data\ORL\s16\1.pgm
PCA_ORL\Data\ORL\s16\10.pgm
PCA_ORL\Data\ORL\s16\2.pgm
PCA_ORL\Data\ORL\s16\3.pgm
PCA_ORL\Data\ORL\s16\4.pgm
PCA_ORL\Data\ORL\s16\5.pgm
PCA_ORL\Data\ORL\s16\6.pgm
PCA_ORL\Data\ORL\s16\7.pgm
PCA_ORL\Data\ORL\s16\8.pgm
PCA_ORL\Data\ORL\s16\9.pgm
PCA_ORL\Data\ORL\s17
PCA_ORL\Data\ORL\s17\1.pgm
PCA_ORL\Data\ORL\s17\10.pgm
PCA_ORL\Data\ORL\s17\2.pgm
PCA_ORL\Data\ORL\s17\3.pgm
PCA_ORL\Data\ORL\s17\4.pgm
PCA_ORL\Data\ORL\s17\5.pgm
PCA_ORL\Data\ORL\s17\6.pgm
PCA_ORL\Data\ORL\s17\7.pgm
PCA_ORL\Data\ORL\s17\8.pgm
PCA_ORL\Data\ORL\s17\9.pgm
PCA_ORL\Data\ORL\s18
PCA_ORL\Data\ORL\s18\1.pgm
PCA_ORL\Data\ORL\s18\10.pgm
PCA_ORL\Data\ORL\s18\2.pgm
PCA_ORL\Data\ORL\s18\3.pgm
PCA_ORL\Data\ORL\s18\4.pgm
PCA_ORL\Data\ORL\s18\5.pgm
PCA_ORL\Data\ORL\s18\6.pgm