Columbia subject headings:
Harvard subject headings:
Canada--Guidebooks.
Gays--Services for--Canada--Directories.
Gays--Services for--United States--Directories.
Gays--Travel--Canada--Guidebooks.
Gays--Travel--United States--Guidebooks.
United States--Guidebooks.
Princeton subject headings:
Canada--Guidebooks.
Directories.
Gays--Services for--Canada--Directories.
Gays--Services for--United States--Directories.
Gays--Travel--Canada--Guidebooks.
Gays--Travel--United States--Guidebooks.
Guidebooks.
United States--Guidebooks.