... The wild speculator borrows upon such terms, to rise suddenly like a rocket, or to fall like its exhausted stick... 
Samuel White Baker 「In the Heart of Africa」
...When I learned the fact of my having been hired to a negro speculator,or a "soul-driver" as they are generally called among slaves, no one cantell my emotions...
William Wells Brown 「The Narrative of William W. Brown, a Fugitive Slave」
...No slave speculator ever dared to cross the threshold of this planter of the Old Dominion...
William Wells Brown 「Clotelle」
... “She's a fine-looking wench,” said the speculator, as he seated himself, unasked, in the rocking-chair; “yet I don't think she is worth the money you ask for her...
William Wells Brown 「Clotelle」
... The speculator had kept close watch over his valuable piece of property, for fear that it might damage itself...
William Wells Brown 「Clotelle」
...The speculator had brought her, but had postponed her removal till she should recover...
William Wells Brown 「Clotelle」
...As vequero, traveller, speculator, sailor, he had toiled for fourteen years, and had failed...
Marcus Clarke 「For the Term of His Natural Life」
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