 Flower, attorney Clarence Darrow, writer Charlotte Perkins Gilman, publicist Leonard D. Abbott, abolitionist hero Thomas Wentworth Higginson, and Harry W. Laidler.Over the signatures of these and other prominent public figures, in the Spring of 1905 Sinclair issued a call for the formation of a new organization, a group to be called the Intercollegiate Socialist Society.Their original call was written as follows