Old-age and survivors insurance statistics. Employment and wages of covered workers, 1938-. - U.S. Bureau of Old-Age and Survivors Insurance (Washington, D.C. Federal Security Agency, Social Security Board, Bureau of Old-age and Survivors Insurance, 1940)
1938- reproduced from type-written copy.
Title varies : 1938, Handbook of old-age and survivors insurance statistics. Employment and wages of covered workers.--1939- Old age and survivors insurance statistics. Employment wages of covered workers
Keywords: Old age pensions -- United States; Insurance, Social -- United States; United States -- Public works