I'm not sure if a lack of citations equates with Henderson being iced out, but his work is not a biography in a strict sense, which may account for it not being cited as often as other early biographical works. Henderson himself called it an "interpretation" and perhaps "critical assessment" or "critical biography" is closer to the Mark. Twain is discussed as a philosopher, sociologist, humorist, moralist, and world-famous American icon. The book was published in the US from English sheets at the end of 1910, and the English edition appeared March 9, 1911. Henderson had met Twain on one of his trans-Atlantic crossings, and visitied him at Stormfield after having a cordial correspondence with Paine, Isabel Lyon, and Ashcroft (I have Henderson's original archive). It includes a useful bibliography of works about Twain published between 1870 and September, 1910, and some great (and now familiar) photographs (two in color) of Mark Twain by Alvin Coburn. Kevin Mac Donnell Austin TX