@techreport{Dahis2019,
author = {Dahis, R. and Nix, E. and Qian, N.},
title= {Choosing racial identity in the United States, 1880–1940},
year = {2019},
doi = {10.3386/w26465},
publisher = {National Bureau of Economic Research},
address = {Washington: D.C},
institution = {NBER Working Paper 26465},
}