Sentence:  The windmill under the care of Mr. Kinney, a kind hearted old Englishman, was to me a source of infinite interest and pleasure. The old man always seemed pleased when he saw a troop of <WSD>darkey</WSD> little urchins, with their tow-linen shirts fluttering in the breeze, approaching to view and admire the whirling wings of his wondrous machine. 
Meaning of the word marked with <WSD> tags:  A person with dark skin.