Metropolitan Business Speller for Commercial and Stenographic Students

Has anyone heard of the Metropolitan Business Speller for Commercial and Stenographic Students?  I saw it at the online store of one of my local used book stores and I might like to buy it (after looking at it in the store, of course).  Does anyone know how it's used?
-teacup25

(by teacup25 for group greggshorthand)

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