Where can I get reliable information on Basque immigration to the United States?
The article, “Re-counting Basques” by William A Douglass, Basque Studies Program Newsletter, no. 47 (1993), gives a useful summary of data on Basque Americans from the 1980 and 1990 censes. Find the 1990 census data on the internet in “Selected Characteristics for Persons of Basque Ancestry: 1990”.