Hamburg, Dreifaltigkeitskirche Hamm

1694-1695: Building of a 2-manual organ by Arp Schnitger, with a free pedal.

1705: Repairs by Otto Meyer.

1712 and 1719: Repairs by Otto Dietrich Richborn.

1738: Repairs by August Wilhelm Bünting

1749: Enlargement by Johann Dietrich Busch

1780: Enlargement by Johann Paul Geycke.

1834: New organ by Hinrich Raschke.