Quarters of coverage:

alternative method for determining 1937-1950 period, SSR 70-01
covered employment for purposes of determining entitlement to old-age insurance benefits, SSR 87-18c
crediting earnings, domestic service, SSR 72-57, SSR 73-31
disability earnings requirement, railroad service, SSR 70-20c
insured status, time first acquired, SSR 65-44
year of death, constitutionality, SSR 83-24c

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