Columbia subject headings:
Architecture--Archival resources--California--San Francisco Bay Area--Directories.
Architecture--Research--California--San Francisco Bay Area--Directories.
Harvard subject headings:
Architecture--Archival resources--Directories.
Architecture--California--San Francisco Bay Area--Archival resources--Directories.
Architecture--Research--California--San Francisco Bay Area--Directories.
Architecture--San Francisco Bay Area--Archival resources--California--Directories.
Princeton subject headings:
Architecture--Archival resources--California--San Francisco Bay Area--Directories.
Architecture--Research--California--San Francisco Bay Area--Directories.