A similar quote was attributed to Mark Twain by Vincent Starrett in his Foreword to THE ADVENTURES OF THOMAS JEFFERSON SNODGRASS (1928) which was a short collection of Mark Twain letters to the KEOKUK POST newspaper. Starrett wrote: In some museum or other, in Havana, if memory serves, there are, according to the early Clemens himself, two skulls of Christopher Columbus -- "one when he was a boy and one when he was a man." (p. x). When Caroline Harnseberger published MARK TWAIN AT YOUR FINGERTIPS (1948) she revised the quote as: In a museum in Havana there are two skulls of Christopher Columbus, "one when he was a boy and one when he was a man." -- P. x - THE ADVENTURES OF THOMAS JEFFERSON SNODGRASS (1928). This quote falls into the "attributed" category without further verification. Barb