This is from The Strand Magazine in 1906. Authors are sized by how much the public read his or her work at the time.
The giant is Dickens, followed by Thackeray and the now largely forgotten Hall Caine. Lesser mortals, left to right, are Thomas Hardy, Mary Elizabeth Braddon, Marie Corelli, Rudyard Kipling, Mary Augusta Ward, J.M. Barrie, Arthur Conan Doyle, Stanley Weyman, Robert Louis Stevenson, Walter Scott, Henry James, Charlotte Brontë, George Meredith, Anthony Trollope, Charles Kingsley, Edward Bulwer-Lytton, Israel Zangwill, Charles Reade, and E.F. Benson.