The materials in this pamphlet describe the difficulties encountered by various racial and ethnic groups as they attempted to become assimilated into the American labor force. The experiences and problems faced by blacks, Jews, and immigrants from England, Ireland, the Scandinavian countries, China, Italy, and Puerto Rico are described in an attempt to correct many of the racial and ethnic stereotypes that American workers have about one another. The contributions that each of these ethnic and racial groups made to the U.S. labor movement are stressed. The following are among the topics covered: religious differences among immigrants from England, West African society, blacks as indentured servants and slaves, competition between blacks and white immigrant workers, the Jim Crow laws, the role of blacks in the Congress of Industrial Organizations (CIO), problems experienced by railroad workers and miners, anti-Chinese sentiments and riots, the Chinese Exclusion Act, the reasons behind the Jewish immigration to the United States, the padrone system and the problems it caused Italian immigrants, strikes and strikebreakers, the negative impact of U.S. rule on the Puerto Rican labor market, and problems encountered by Puerto Ricans in the United States. All of the materials originally appeared as a series of articles in the community newspaper "The Link," which is published by the United Community Centers of Brooklyn, New York. A 5-page list of significant dates in the U.S. labor movement and a list of labor history resources (print and film) conclude the pamphlet. (MN)