Race Mixing and Marriage Laws
141 objects illustrate this topic:

Page: of 15 
"A century of change in Hawaii's population," about immigration (#932)
Actors, one with "a colored strain" (#462)
American Eugenics Party platform, multiple pages (#762)
"Amount of Negro and Other Colored Blood Illegal in Various States for Marriage to Whites: 1929," by W.A. Plecker, Eugenical News (vol. 14:8) (#1442)
"An act to amend the domestic relations law, in relation to prevention of hereditary blindness", New York State Senate, multiple pages (#264)
Analysis of fingerprints in Jamaica study, multiple pages (#888)
"Anti-miscegenation laws of the several States: 1932," 3rd International Eugenics Conference (#1068)
"Average dimensions for white and colored races" (#996)
"Believes idea good, sees no objection study of race relations," letter to the editor of Columbia State (#465)
Biometrika abstracts (vol. 6:4), including Karl Pearson's note on Jamaica race mixing based on observations provided by Isaac Costa (#1999)
"Blond Indians of the Darien jungle," by R.O. Marsh, World's Work, multiple pages (#731)