Libraries nationwide are serving increasingly diverse communities as the changing face of America is reflected in the changing information needs of diverse patrons. A key issue in serving the multicultural community is adopting a revised version of collection development. Materials in the native languages of ethnic and language minorities, biographies representing different ethnicities, and resources for the young are necessary. A commitment to expanding their own cultural awareness is required for library administrators and librarians. The commitment to improving service to diverse communities must be reflected in the mission statements and objectives of libraries. In addition, library staff must represent the diversity of the community. Case studies of multicultural efforts at the Berkeley (California) Public Library and the San Jose (California) Public Library illustrate some ways in which the library can reach out to the diverse community. When a library has insufficient diversity among staff members, members of ethnic communities should be invited to serve as resources and advisors to the library. (Contains 14 references.) (SLD)