Columbia subject headings:
Law--Information services--Directories.
Law--United States--Directories.
Law--United States--Information services--Directories.
Harvard subject headings:
Law--Canada--Information services--Directories.
Law--Information services--Directories.
Law--United States--Directories.
Law--United States--Information services--Directories.
Law--United States--Societies, etc.--Directories.
Legislation.
Princeton subject headings:
Law--Canada--Information services--Directories.
Law--United States--Information services--Directories.