William Edward Burghardt Du Bois,
The Gift of Black Folk: The Negroes in the Making of America
(1924)
“ More than twenty per cent, of a country’s full quota could not be admitted in one month except in the case of actors, artists, lecturers, singers, nurses, clergymen, professors, members of the learned professions or domestic servants who could always come in even though the month’s or the year’s quota had been used. ”
