Mary Lou Williams performs at the Cafe Society in New York in 1947. William Gottlieb/The Library of Congress hide caption

itoggle caption William Gottlieb/The Library of Congress

Lester Young gave Billie Holiday her nickname: "Lady Day." William P. Gottlieb/Library of Congress via flickr.com hide caption

itoggle caption William P. Gottlieb/Library of Congress via flickr.com