International Labour Day Edit-a-Thon, University of Maryland Hornbake Library Union poster published in occupied Japan between 1945-1949. The title says "How to dig up these Treasures". The treasures are a stable life, democratized Japan, and revival of Japan's international status. In order the achieve these, the Japanese people need mutual cooperation between employees and employers, mutual cooperation between the public sector and private companies, understanding of the "work for all" concept, higher moral principles among the work force.