It is too well written to not have been tweaked by Twain.
Except that the original manuscript is in the Library of Congress and can be compared to the final book, and its style is perfectly consistent with his letters, orders and reports.
57 posted on 07/24/2015 4:03:31 PM PDT by Bubba Ho-Tep
("The rat always knows when he's in with weasels."--Tom Waits)