Columbia subject headings:
Casa organaria Rotelli Varesi (Firm)--Archives.
Organ (Musical instrument)--Italy--Cremona--History--Sources.
Organ builders--Italy--Cremona.
Harvard subject headings:
Casa organaria Rotelli Varesi (Firm)--Archives.
Organ (Musical instrument)--Italy--Cremona--History--Sources.
Organ builders--Italy--Cremona.
Princeton subject headings:
Casa organaria Rotelli Varesi (Firm)--Archives.
Organ (Musical instrument)--Italy--Cremona--History--Sources.
Organ builders--Italy--Cremona.