Known from a report in the Public Ledger, Jan 22, 1848 See DOCUMENTS tab
"NEW ORGAN - Mr. Henry Knauff, well known in our community an an organ builder, has recently completed a new and very fine instrument for St. Matthew's Lutheran Church, in New street, which hos some points of unusual beauty. It has two fingerboards and pedals. The stopt diapason of the great organ is also peculiarly adapted as a solo stop.

The date is mellifluous and clear. The basset horn of the great organ is a reed of peculiar construction, recently invented in Europe, and has not been previously made by any other manufacturer in this country. It in what is called a free swinging reed, combined with a pipe, and produces a body of tone equal to any diapason, in connection with its quality as a reed stop. Another feature of this stop is, that its quality of tone comes nearer to that of the human voice than any other ; and hence its fitness for supporting and combining with the choir of singers It can also be used in its lowest notes as a solo stops just the point in which other reeds fail, The whole of the great organ is acted upon by a set of twelve composition pedals, which in a separate mechanical contrivance, just introduced in the large organ in Birmingham England, and by means of which any change or solo stope can be brought into use instantly, without raising the hands from the keys.

The swell organ has an effective crescendo. It contains, beside the hautboy and usual stops, another called dulciana, never introduced here before, and of a more mellow tone then even the ordinary dulciana. It also has stop, the Viol di Gamba, in imitation of a violin, together with the violincello of the pedals, which, arranged, are strikingly character. The effect of the whole organ is a full body of without roughness -not noise, but music of the sweetest kind."