If you consider Adams work the pinnacle of landscape imagery and Bresson the originator of the decisive moment genre then Penn has to be considered as the master commercial photography.
B&W or color, portraits, fashion or products, he set the bar for all who would follow.
Trained early in life as a painter, his work usually transcends the medium and redefined what can be considered art in photography. He worked across all formats and processes and his subjects were as varied as native tribal peoples of New Guinea, fashion work for magazines such as Vogue and discarded cigarette buts and packs which he transformed from trash to things of beauty.
Anyway, here is something fairly recent. Beauty Treatment with Gauze Mask, New York (1997)