Social, economic, educational, and attitudinal data concerning migrant and seasonal farmworkers in 16 states were obtained through personal interviews from January 1978 through February 1979. Responses involving about 84,000 individuals were tabulated for use in program planning, administration, and funding. Data from interviews conducted in the field or in farmworker service organization (FSO) offices were recorded on standardized forms and sent to the Farmworker Data Network (FDN) in Wheatridge, Colorado, for compilation and entry into the computerized data base. Analysis of FDN data from 16 states, using FSOs in New Mexico and North Dakota as control groups, showed that the average farmworker earned $3,025 per year, had completed 7.3 years of school, had 3.94 dependents, and was approximately 33 years old. Hispanics comprised 55% of the experimental group, males were the head-of-household 87% of the time, and food was the primary need. As the study evolved, 10 research hypotheses with suggested methodology, thought to be of major importance in increasing understanding of seasonal and migrant farmworkers, emerged for future research. Besides numerous tables and figures, this report contains 22 photographs, 7 one-page excerpts from related articles, and copies of the interview schedule. (AW)