When asked which essays summarize Mark Twain’s reading, scholar Alan Gribben listed three: “Reading,” Mark Twain in Context, ed. John Bird. Cambridge, England: Cambridge University Press, 2020. 14-23. (The best condensation of Alan Gribben’s 50 years of research into Twain’s reading.) “Mark Twain Abroad: Travel Writing,” A First Class Fool: Mark Twain and Humor, eds….