Mark Twain’s Collected Works, Harper Brothers, 1898–1924.

Mark Twain’s Letters, 2 vol., 1917.

Mark Twain’s Autobiography, 2 vol., 1924.

Ma k Twain’s Noteboo»4, 1935.

Mark Twain's speeches, 1923.

Paine, A. B., Mark Twain, a Biography, 3 vol, 1912.

Brooks, Van Wyck, The Ordeal of Mark 1 wain, 1933. Leacock, St., Mark Twain, 1932.

Le Voto, B., Mark Twain’s America, 1932.

Howells, W. D., My Mak Twain, 1910.

Clemens, lara, My Fatier — Maik Twain, 1931.

Masters, Edgar Lee, Mark Twain, 1938.

Wagenknecht, E d w., Mark Twain, the Man and his Work, 1935.

Repesentative Selections from Mark Twain — Introduction by Fred Lewis Pattee, 1930

Blair, W., Native American Humor, 1937.

Leacov k, St., The Greatest Pages of American Humor, 1936. Rourke, C., American Humor, 1935.

Hicks, G., The Great Tradition, 1935.

Beard, С h. & Mary R., lhe Rise of American Civilisation, 2 vol., 1927.

Bow sand Burton, Social Backgrounds of American Literature 19ЗЗ.

Garland, H., Companions on the Trail, 1931.

Parrington, Main Currents in American Thought, vol. Ill, 1931.