"Expedition's the word!" Clemens uses this once in a letter to Bliss, and once in a letter to Riley, but most importantly, twice in a letter to Olivia (11 and 12 December 1873). The first two letters may be found in the recently published Mark Twain's Letters, Volume 4 1870-1871. Can anyone pin this down as an aphorism or a quotation? Mark Twain Project UC Berkeley mtp at UCBLIB_LIBO