Columbia subject headings:
Organ (Musical instrument)--Construction--Italy--Bergamo.
Organ (Musical instrument)--Italy--Bergamo--History--18th century--Sources.
Organ (Musical instrument)--Italy--Bergamo--History--19th century--Sources.
Organ builders--Italy--Bergamo.
Organists--Italy--Bergamo.
Perolini family.
Harvard subject headings:
Organ (Musical instrument)--Construction--Italy--Bergamo.
Organ (Musical instrument)--Italy--Bergamo--History--18th century--Sources.
Organ (Musical instrument)--Italy--Bergamo--History--19th century--Sources.
Organ builders--Italy--Bergamo.
Organists--Italy--Bergamo.
Perolini family.
Princeton subject headings:
Organ (Musical instrument)--Construction--Italy--Bergamo.
Organ (Musical instrument)--Italy--Bergamo--History--18th century--Sources.
Organ (Musical instrument)--Italy--Bergamo--History--19th century--Sources.
Organ builders--Italy--Bergamo.
Organists--Italy--Bergamo.
Perolini family.