The organ is 5'6" wide, 2'6" deep and 8' 11" high. Its wind-chest is but 4' 3-1/2" long and 1' 4-3/4" deep, front to rear. The organ is in a paneled case, resembling an old fashioned secretary. Its single manual is hinged, and folds up flush with the case. There are six draw knobs, with square shanks, set in vertical rows, and with discs engraved in shaded script. They have a draw of 2½ inches. Above the manual is a panel containing gilded pipes turned out of wood. They are not speaking pipes. This panel lifts out, revealing four rows of pipes of rather small scale. The case is neatly made of black walnut, and the music board contains marks of a pair of candle brackets, such as one seen on old pianos and organs. Gaslight in New York City dates from February, 1825.

    On the bottom pipes of the Principal and Clariana is the name of Henry C. Stuart, and under it the name Kilgen, both neatly engraved. The bottom Principal pipe likewise contains the name of C.S. Brandrup, in later years an organ builder in Brooklyn. On another pipe is the name of E. Riley, and under it is Kilgen. Still another pipe reveals the name of Edwin J. Dennoyer & Co. Each set of pipes has the name of Kilgen.

    J. George Kilgen came from Germany to New York in 1849, worked for Jardine, and in 1851 established his own factory in New York, where he built organs until moving to St. Louis in 1873. Since his name appears on all four sets of pipes, it is presumed that this is one of the first Kilgen organs, or at least that he furnished the pipes for it. The action is direct, with no trackers except for the thirteen pedal keys, which merely pull down the lower pallets of the manual.

The fate of this organ is unknown.