Lonely derriere

This is the only derriere in today's series, and it has been noted that Al Urban unflinchingly took frontal nudes when it could land him in jail.  Having done some rudimentary sampling comparisons, I can say with relative certainty that he took fewer rear view shots than just about any of his peers, or at least insofar as what remains for us to see today.  That may be simply because Mr. Urban went where the money was, i.e. "legitimate" magazine work and illicit frontals that would fetch top dollar.  Derriere photos, while frowned upon, were not illegal in most jurisdictions.