I recently came across a t-shirt design that sported the first names of the greatest, most influential dance choreographers of the 20th century. Bold black letters, centered on a gray shirt:

GEORGE
MERCE
MARTHA
AGNES
BOB
JEROME
TWYLA
ALVIN

I was just thinking about which eight photographers we would pick to be on a similar shirt. Everyone's lists would differ, I'm sure, according to the genre of photography favored, but whom would you say are the indisputable masters of the 20th century?