Main currents in American thought : an interpretation of American literature from the beginnings to 1920 / Vernon Louis Parrington . Parrington, Vernon Louis, 1871-1929. American literature History and criticism. Philosophy, American. 810.9 PAM Bibliography at end of each volume. New York : Harcourt, Brace and Co., [c1930] [c1930] 1930 Text 3 v. in 1 ; eng Main currents in American thought. Also issued online. Main currents in American thought. Also issued online. United States Civilization. United States Religion. United States Politics and government.