"The Idea of May Day on the March," by Rosa Luxemburg, 1913, First published in Liepziger Volkszeitung, April 30, 1913, From Selected Political Writings of Rosa Luxemburg, tr. Dick Howard (NY: Monthly Review Press, 1971).
"The Mass Strike, the Political Party and the Trade Unions," by Rosa Luxemburg, 1906, published by Marxist Educational Society of Detroit, 1925, translated by Patrick Lavin.
"What Are the Origins of May Day?" by Rosa Luxemburg, 1894, Written: 1894. First published in Polish in Sprawa Robotnicza, Published: From Selected Political Writings of Rosa Luxemburg, translated by Dick Howard, Monthly Review Press, 1971, pp. 315-16.
