Some 26 Mexican American families of East Los Angeles having children in Head Start responded to a questionnaire gathering data on birthplace, family income, number of individuals in the home, and pregnancy history of the mothers. Questionnaire results recorded in this document indicate that 46% of the mothers and 35% of the fathers were born in the United States; mean length of stay in Los Angeles was 12.5 years; 58% of the Head Start children were born in the United States and 5% were born in Mexico; there was a mean of 5.8 individuals living in the home; the age range of children was from 1 to 7 years; in 65% of the homes the father was living in the home and employed as laborer or factory worker; the mean weekly income per person per week was $13; and 19% of the families were receiving Welfare while 12% were receiving Aid to Families with Dependent Children. The pregnancy history of mothers included health for 5 years prior to pregnancy, work outside the home during pregnancy, food restrictions, medical care during pregnancy, medical problems during pregnancy, vitamin and mineral preparations taken during pregnancy, and number of live-born children, abortions, stillborns, and premature children. (JB)