URL: https://digitalcollections.hoover.org/objects/37441 Collection Structure Poster collection > The best form of monopoly for capital or labor is co-operation. Item Title The best form of monopoly for capital or labor is co-operation. Collection Title Poster collection Issuing Body National Industrial Conservation Movement Date Created 1914/1918? Description Text only. Subject(s) World War, 1914-1918 United States Economic aspects Labor productivity Priorities, Industrial Industrial productivity Industries Industrial relations Language(s) English Country of Origin United States Country of Origin United States Dimensions Overall: 25 x 17 in. (63.5 x 43.2 cm) Format Poster Medium political posters Color black and white Color black and white Hoover ID Poster US 4228 Record Number XX343.27817 Collection Guide https://oac.cdlib.org/findaid/ark:/13030/kt829015km Rights No known restrictions.