"In an age when many people lived on less than two dollars a day, his income rose to as much as a hundred thousand dollars a year. He was the highest paid writer in America, and it was widely reported that his magazine contributions could earn a dollar a word. In fact, his last contract with Harper & Brothers guaranteed him only a third of that, but it was still a better deal than anyone else could have expected, and he always insisted on a strict word count from his editors, even going so far as to demand that hyphenated words be counted as two. Legend has it that when an admirer enclosed a dollar with a request for his autograph, he replied not with his signature but with the single word "Thanks," in accordance with his rumored rate."