Sentence:  For years, by every possible device, we have been raising the prices of our agricultural products against the foreign buyers ... by every device known to the <WSD>ambidextrous</WSD> tradesman and financier. The  result is that we have raised up other and unexpected competitors in the markets  of the world. 
Meaning of the word marked with <WSD> tags:  Exceptionally skillful; adept in more than one medium, genre, style, etc.