Columbia subject headings:
Memphis Service Center (United States. Internal Revenue Service)--History.
United States. Internal Revenue Service--History.
Harvard subject headings:
Memphis Service Center (United States. Internal Revenue Service)--History.
United States. Internal Revenue Service--History.
Princeton subject headings:
Income tax--United States--Data processing--History.
Internal revenue--United States--Data processing--History.
Memphis Service Center (United States. Internal Revenue Service)--History.
Tax administration and procedure--United States--History.