Below is a list of documents which I cannot find online. I welcome any assistance in tracking them down.
These are listed as "Releases." The list appears in Negro Newspapers and Periodicals in the United States, 1938.
Census Bureau Bulletins
372. United States. Abstract – State of birth of native population
384. United States. Abstract -- Tenure, mortgage indebtedness, color and nativity of farmer, and size of farms by States
Mental defectives and epileptics in institutions: 1926-1937. Statistics of admissions and discharges of mental defectives, and epileptics in state, city and private institutions, 1931-1939.
Convention dates of Negro organizations: 1943. Negro Statistical Bulletin, No. 2
Prisoners executed. 1942-1945: Population. Series PN.
Black Children in America (CB/94-1)
Patients in hospitals for mental disease: 1926-1937.
Hotels Operated by Negroes September 1938 (Bulletin No. 17)