Woodson and the Association scrambled to meet the demand. They set a theme for the annual celebration, and provided study materials—pictures, lessons for teachers, plays for historical performances, and posters of important dates and people. Provisioned with a steady flow of knowledge, high schools in progressive communities formed Negro History Clubs. To serve the desire of history buffs to participate in the re-education of black folks and the nation, ASNLH formed branches that stretched from coast to coast. In 1937, at the urging of Mary McLeod Bethune, Woodson established the Negro History Bulletin, which focused on the annual theme. As black populations grew, mayors issued Negro History Week proclamations, and in cities like Syracuse progressive whites joined Negro History Week with National Brotherhood Week.