Books sold "by subscription only" were seldom advertised in periodicals, although publishers like Elisha Bliss did advertise for agents to sell them. But the American Publishing Co. prepared ad copy and designed graphic posters for Innocents Abroad that were used in a number of media: end papers of other company books, catalogues, circulars, and The American Publisher, a magazine-format publication created by Bliss in the early 1870s (and edited for a while by MT's brother Orion) to promote the works and authors on the company's list. The way a book was publicized says a lot about how it was expected to appeal to the tastes and prejudices of contemporary readers.

• Agents Wanted Announcements (1869)
• Poster from end of Innocents Prospectus (1869)
  (also used at end of A Tramp Abroad, 1880)
• Sales Pitch from end of Prospectus (1869)
• Cartoon of MT at the Tomb of Adam, from The American Publisher (July 1872)
• Halfpage Ad (with ad for Roughing It) from end of The Gilded Age (1873)
• Illustration of Adam's Tomb from MT's Library of Humor (1888)
• Blurb for Innocents in Your Mark Twain (1912)
  (brochure for 25-volume Harper's edition)