Research and Analysis by J. R. Arnold
Old-Age Insurance: Covered Workers and Average and Median Taxable Wages in 1937
from Social Security Bulletin, Vol. 2, No. 4 (released April 1939)
Quarterly Employment and Pay Rolls Under Old-Age and Survivors Insurance, 1940
from Social Security Bulletin, Vol. 5, No. 4 (released April 1942)