1851 Great Exhibition: Official Catalogue: Class X.: Thomas Frederick Roome
548. ROOME, THOS. FRED., 67 John Street, Fitzroy Square - Manufacturer.
Organ metal pipes, in plain and spotted metal — trumpet, hautboy, cremona, flute, open diapason, viol de gamba, and keraolophon.
[The best metal for organ pipes is pure tin; this, however, being expensive, it is frequently mixed largely with pewter. Cremona is a corruption of krumhorn, an obsolete German wind instrument.—H. E. D.]