and is often recorded in the literature of the time. George Fredrick Ruxton used it in his "mountain man" lexicon, without pejorative connotation. "Niggur" was evidently similar to the modern use of "dude" or "guy". This passage from Ruxton's Life in the Far West illustrates the word in spoken form—the speaker here referring to himself: "Travler, marm, this niggur's no travler; I ar' a trapper, marm, a mountain-man, wagh!" It was not used as a term exclusively for blacks among mountain men during this period, as Indians, Mexicans, and Frenchmen and Anglos alike could be a "niggur". "The noun slipped back and forth from derogatory to endearing." By 1859 the term was clearly used to offend, in an attack on abolitionist John Brown. The term "colored" or "negro" became a respectful alternative. In 1851, the Boston Vigilance Committee, an abolitionist organization, posted warnings to the Colored People of Boston and vicinity. Writing in 1904, journalist Clifton Johnson documented the "opprobrious" character of the word nigger, emphasizing that it was chosen in the South precisely because it was more offensive than "colored" or "negro". By the turn of the century, "colored" had become sufficiently mainstream that it was chosen as the racial self-identifier for the National Association for the Advancement of Colored People (NAACP). In 2008 Carla Sims, its communications director, said "the term 'colored' is not derogatory, [the NAACP] chose the word 'colored' because it was the most positive description commonly used [in 1909, when the association was founded]. It's outdated and antiquated but not offensive." Mark Twain, in the autobiographic book Life on the Mississippi (1883), used the term within quotes, indicating reported speech, but used the term "negro" when writing in his own narrative persona. Joseph Conrad published a novella in Britain with the title The Nigger of the "Narcissus" (1897); in the United States, it was released as The Children of the Sea: A Tale of the Forecastle; the original had been called "the ugliest conceivable title" in a British review and American reviewers understood the change as reflecting American "refinement" and "prudery." 20th century United States A style guide to British English usage, H. W. Fowler's A Dictionary of Modern English Usage, states in the first edition (1926) that applying the word nigger to "others than full or partial negroes" is "felt as an insult by the person described, & betrays in the speaker, if not