Click on the faceData link to download file faceData.mat.
In MATLAB use command, 'load faceData'. The variable A
will be loaded in your workspace. This variable is of size
1734 x 150. It contains 150 face images of size 34 x 51
each, arranged in columns. Each column was generated by
scanning the original image in a row-wise order.

To view any of the original images, you may use the reshape
command: For example, if we want to extract the 70th image, 
do the following:
im70 = reshape(A(:,70), 51, 34)';

For those of you who may be interested in how this matrix
was generated given the original PGM files, I have put a 
file generatingA.zip on the web-page. It also includes a
function ReadBinPGM.