File:Britannica Organ Square and Trackerwork.png
Britannica_Organ_Square_and_Trackerwork.png (436 × 268 pixels, file size: 5 KB, MIME type: image/png)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 11:59, 2 September 2009 | 436 × 268 (5 KB) | Bob Burkhardt | {{Information |Description={{en|1=Pipe organ square and tracker work: ''A'', square, ''B'', tracker; ''C'', metal square. These are for connecting keys to their pallets.}} |Source=Encyclopædia Britannica, 11th ed., Vol. 20, p. 260 |Author=Robert Holfor |
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