Ethnic traditions and the search for a cultural identity constitute strong forces in contemporary American society. The school media center has an important role in smoothing the societal transition from a "melting pot" ideal to a multicultural philosophy, for collections of culturally pluralistic materials and services can create bridges of understanding within the society. This document addresses the specific client needs, programs, and materials for four cultural or ethnic groups. The chapter on American Indians states that librarians must avoid materials that perpetuate stereotypes and misinformation. It recommends that media specialists request assistance from Indian librarians in selecting programs and materials that realistically portray the historical and contemporary experience of the American Indian people. The chapter on Afro-American heritage in children's materials cites the need for a variety of settings, occupations, situations, and characters as vitally important. The section on Asian-Americans in literature addresses such issues as syncretism and cultural pluralism, library programs, and Asian images in literature. The final chapter is concerned with the role of the media centers in bilingual education. Focusing on the acquisition of materials for Spanish-speaking children, it seeks to make librarians aware of the diversity of materials available and of some of the myths surrounding selection of Spanish language materials. (DS)