and adding machine It Writes Here t Aids Here The New with Wahl Adding and Subtracting Attachment It is the only adding and subtra ti g machine hich writes. It is the only machi e which affords the maximum of labor saving in com bined writing and adding work. Remington Typewriter Company aatorro.ted) Cross Please mention the SCIENTIFIC AMERICAN when writing to advertisers, -1909-10-30
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