Washington, DC Georgetown Lutheran Church Organ by Richard Howell & Co. Primary manual: 8' Principal 8' Gedackt 4' Octave 4' Rohrflute 2' Octave (I) II Sesquialtera 1⅓ Sifflet IV/V Mixture 8' Trumpet Secondary manual: 8' Back Principal Pedal: 16' Subbass Adjustable tremulant Manual to pedal couplers