Allen, Frederick Lewis, Only Yesterday: An Informal History of the 1920's, HarperPerennial Library, 2000.

Originally published in 1931, Only Yesterday traces the rise of post-World War I prosperity up to the Wall Street crash of 1929 and against the backdrop of flappers, Prohibition, and the rise of the women's suffrage movement.

Molesworth, Charles, Marianne Moore: A Literary Life, Atheneum, 1990.

Molesworth's biography is the best so far on Moore's life. Using Moore's correspondence and diaries, he deftly makes connections between the poet's work and her life.

Stapleton, Laurence, Marianne Moore: The Poet's Advance, Princeton University Press, 1978.

Stapleton's critical study of Moore's poetry contains a good deal of biographical information, and makes connections between her work and other poets and poetry. This is a very accessible study.