We find it at work at first in the decade of the thirties at the very beginning of the labor movement. It then took the form of a demand for a free public school system. These workingmen in Philadelphia and New York discovered that in the place of the social democracy of the Declaration, America had developed into an "aristocracy." They thought that the root of it all lay in "inequitable" legislation which fostered "monopoly," hence the remedy lay in democratic legislation. But they further realized that a political and social democracy must be based on an educated and intelligent working class. No measure, therefore, could be more than a palliative until they got a "Republican" system of education. The workingmen's parties of 1828-1831 failed as parties, but humanitarians like Horace Mann took up the struggle for free public education and carried it to success. If in the thirties the labor program was to restore a social and political democracy by means of the public school, in the forties the program centered on economic democracy, on equality of economic opportunity. This took the form of a demand of a grant of public land free of charge to everyone willing to brave the rigors of pioneer life. The government should thus open an escape to the worker from the wage system into self-employment by way of free land. After years of agitation, the same cry was taken up by the Western States eager for more settlers to build up their communities and this combined agitation proved irresistible and culminated in the Homestead law of 1862. The Homestead law opened up the road to self-employment by way of free land and agriculture. But in the sixties the United States was already becoming an industrial country. In abandoning the city for the farm, the wage earner would lose the value of his greatest possession--his skill. Moreover, as a homesteader, his problem was far from solved by mere access to free land. Whether he went on the land or stayed in industry, he needed access to reasonably free credit. The device invented by workingmen to this end was the bizarre "greenback" idea which held their minds as if in a vise for nearly twenty years. "Greenbackism" left no such permanent trace on American social and economic structure as "Republican education" or "free land." The lure of "greenbackism" was that it offered an opportunity for self-employment. But already in the sixties, it became clear that the workingman could not expect to attain self-employment as an individual, but if at all, it had to be sought on the basis of producers' cooperation. In the eighties, it became doubly clear that industry had gone beyond the one-man-shop stage; self-employment had to stand or fall with the cooperative or self-governing workshop. The protagonist of this most interesting and most idealistic striving of American labor was the "Noble Order of the Knights of Labor," which reached its height in the middle of the eighties.