Articles in this issue of the bulletin of the Hispanic Research Center focus on the problems of collecting demographic and social data in the South Bronx. The introductory article summarizes the contents of this issue. The second (by Lloyd H. Rogler, Osvaldo Barreras, and Rosemary Santana Cooney) is based on the experiences of field workers conducting an intergenerational family study. It describes how interviewees' distrust was mitigated by employing bilingual, culturally adaptable interviewers. The third article (Field Problems in a Multiethnic Survey of Fordham-Tremont Residents...," by Willian Burger) reports a different set of problems: physical safety, adhering to schedule, and White interviewees' biased distrust of minority interviewers. Recommendations made for coping include allowing a reasonably large amount of time for completing interviews, paying particular attention to the number and ethnicity of interviewers, surveying the study area in advance for crime incidence, and soliciting the assistance of neighborhood leaders. The fourth article (by Orlando Rodriquez) presents the preliminary results of the field study whose problems are discussed in the third. It examines the use of social and mental health services by Hispanic, Black, and White residents of the South Bronx. The fifth article ("Innovative Theoretical Formulations of Relevance to Critical Transitions in Family Development," by Yvonne Martinez Ward) describes aspects of the theories and conceptualizations of family research put forth by sociologist Reuben Hill at a seminar-workshop he conducted in 1982 at the Hispanic Research Center. (KH)