Its harder than u might think. Best thing to do is google it. But even then you won't (I highly doubt) get a scaled front and side view of whoever u want. What I've done is find a front shot, or as close as i can get to having no angle. Then find another one with a "perfect" side view.
The problem with that is, it is 2 seperate photos shot at two seperate times, and probably wont match eachother at all.
Try and scale to match the top of the head, the nose, and the chin. Someimes ill get 3 or more photos just so i can get a general idea.
I'm sure that didn;t help much but atleast you can get started with what u want then go from there.