Spain Emigration and Immigration
The Immigrant Ancestors Project (free online database) includes lists of emigrants from Spain.
Sometimes it is possible to guess where an immigrant originated through surname distribution maps.
Emigrantes Riojanos a América (1880-1936) This site has a database of people who emigrated from the province of La Rioja. It can be [searched by locality if you know the name of the town in La Rioja where your ancestor was from.
A wiki article describing an online collection is found at:
- Spain, Consular Records of Emigrants (FamilySearch Historical Records)
- Spain, Cadiz Passports (FamilySearch Historical Records)