Columbia subject headings:
Harvard subject headings:
Foundlings--Care--Italy--Milan--History.
Foundlings--Italy--Milan--History.
Milan (Italy)--Social conditions.
Orphanages--Italy--Milan--History.
Poor--Italy--Milan--History.
Princeton subject headings:
Child welfare--Italy--Milan--History.
Families--Italy--Milan--History.
Foster home care--Italy--Milan--History.
Foundlings--Italy--Milan--Social conditions--History.
Foundlings--Italy--Milan--Statistics.
Foundlings--Services for--Italy--Milan--History.
Pia casa degli esposti e delle partorienti in S. Caterina alla Ruota (Milan, Italy)--History.