As the colophon in the Autobiography says, the body type is 10 point set on a 14-point slug (in the language of the old Linotype days)--thus, "10/14". There are 72 points to an inch; 12 points to a pica. The typeface in the Autobiography is Adobe's version of Garamond, an old-stype serif typeface first designed by Claude Garamond in the early 1500s. He was called a "punchcutter," and his typeface, in Roman form, is characterized by the small "eye" of the lower case E's and A's. It has a nice, fluid appearance, as is clear in the Autobiography. The material set in "smaller" type is probably no less than 9 point. For a good contrast, use your computer's stock of typefaces to set the same three or four lines of Roman (not italic or bold) in Garamond, Century Schoolbook or Bookman Old Style, and Times Roman. Caslon, although not on a lot of computers' stock, is another fine "face." Another family, "Bodoni", if you have it, is best as a headline type and not for body. In your comparison, also note the length of the lines--some faces take more space, adding pages (and thus cost) to a book. And as an aside, when Sam Clemens was a boy, there was a need for numerous typesetters to get out a daily newspaper quickly. It was a job much like working at McDonalds was a few years ago--a job boys could do after school or, as in Sam's case, instead of school. It is not unusual for the biographies of men who were young in the 1800s to include mention of their having been typesetters. Bob Stewart