These generally followed the directions given in 1910 and 1920. (pp. 52)

There were specific directions for reporting race. A person of mixed White and Negro blood was to be returned as Negro, no matter how small the percentage of Negro blood; someone part Indian and part Negro also was to be listed as Negro unless the Indian blood predominated and the person was generally accetped as an Indian in the community. A person of mixed White and Indian blood was to be returned as an Indian, except where the percentage of Indian blood was very small or where he or she was regarded as White in the community. For persons reported as American Indian in column 12 (color or race), columns 19 and 20 were to be used ot indicte the degree of Indian blood and the tribe, instead of the birthplace of ather and mother. In order to obtain separate figures for Mexicans, it was decided that all persons born in Mexico, or having parents born in Mexico, who were not definitely White, Negro, Indian, Chinese, or Japanese, would be returnd as Mexicans (Mex). Any mixture of White and some other race was to be reported according to the race of the parent who was not White; mixtures of colored races were to be listed according to the father's race, except Negro-Indian (discussed above). (pp. 52)

Place of Birth (Father)
Twenty Censuses: Population and Housing Questions 1790-1980. Washington, D.C.: Government Printing Office, 1979. pp. 53

Place of Birth (Mother)
Twenty Censuses: Population and Housing Questions 1790-1980. Washington, D.C.: Government Printing Office, 1979. pp.53

Language spoken in home before coming to the United States
Twenty Censuses: Population and Housing Questions 1790-1980. Washington, D.C.: Government Printing Office, 1979. pp. 53