Columbia subject headings:
American Hospital Association--Directories.
Hospitals--United States--Directories.
Medicine--Societies, etc.--Directories.
Harvard subject headings:
American Hospital Association--Directories.
Hospitals--United States--Directories
Medicine--Societies, etc.--Directories.
Princeton subject headings:
American Hospital Association--Directories.
Directories.
Hospitals--United States--Directories.
Medicine--Societies, etc.--Directories.