Listed only by Irwin, who says: �Two or more ranks of 8' manual Strings voiced softly, perhaps as a céleste.�

Muted Strings II 8', Swell; First Baptist Church, Denver, Colorado, USA; Aeolian-Skinner 1945.

Muted Strings II 8'; Ballroom, Convention Hall, Atlantic City, New Jersey, USA; Kimball 1930.

Muted Strings 8' (II), Echo; Elks Lodge, Atlantic City, New Jersey, USA; Midmer-Losh 1925.

Muted Strings #1 II 8', Muted Strings #2 II 8', Muted Strings #3 II 8', Muted Strings #4 II 8', String Ensemble; Woolsey Hall, Yale University, New Haven, Connecticut, USA; Skinner 1928.