A Dictionary of Music and Musicians/Walker, Eberhardt
WALKER, Eberhardt Friedrich, an organ-builder at Cannstadt, Stuttgart, in the middle of the 18th century, and his son, of the same names, is one of the best builders in Germany. In 1820 he removed to Ludwigsburg. His European reputation is due to the fine organ which he built in 1833 for the church of St. Paul at Frankfort-on-the-Main. In 1856 he completed a large organ for Ulm Cathedral of 100 stops on 4 manuals and two pedals, and a new movement for drawing out all the stops in succession to produce a crescendo. This can be reversed for a diminuendo. In 1863 he carried his fame to the New World by erecting a large organ in the Music Hall, Boston, U.S.
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