Voters Registration Card from 1920
Fortunately Voters Registration Cards from the first half of the 20th Century were kept by the Brockton City Clerks. Voters Registration Cards will often contain information on where a person was naturalized. Write to the City Clerk of Brockton for copies of Voters Registration Records:
45 School Street
Brockton, MA 02301-4059
Be sure to include the years the person lived in Brockton.