Here are photos—154 in black-and-white and color—of men and women clothed or unclothed, taken from the 1880s through the 1990s by Jacques-Henri Lartigue, Imogene Cunningham, Steven Meisel, Bettina Rheims, Helmut Newton, Kurt Markus, Ellen von Unwerth, Andre Kertesz, Louis Dahl-Wolfe, Brassai, and 75 others.