Actual sequences of authors on my bookshelves (a sampling)

Adams, Anderson, Asimov.
Crichton, Christie, Clarke.
Dillard, Douglas, Duncan.
Hemingway, Herbert, Hiassen.
Irving, Irving, Isherwood, James, James.
Michener, Milne, Mitchell.
Pratchett, Pullman, Puzo.
Sagan, Scalzi, Shakespeare.
Stephenson, Thurber, Trollope.
Twain, Tolkien, Vinge.
Wallace, Warren, Westerfeld, Wouk, Willis.