Bostetter, Edward E., Romantic Ventriloquists: Wordsworth, Coleridge, Keats, Shelley, Byron, University of Washington Press, 1975.

The method used here is primarily biographical with
relationships drawn between the poet's life and the
poem. Bostetter shows how Keats's mistress, Fanny
Brawne, fit the love pattern he describes in this poem.

Evert, Walter H., Aesthetic and Myth in the Poetry of Keats, Princeton University Press, 1965.

Evert analyzes the attempts of critics to determine the
"source," or inspiration, of this poem. Examining different
theories, he finds substantial evidence that the
theme of "La Belle Dame sans Merci" was drawn
from a sub-theme in his earlier work, Endymion.

Grant, John E., "Discovering 'La Belle Dame sans Merci,'" in Approaches to Teaching Keats's Poetry, edited by Walter H. Evert and Jack W. Rhodes, Modern Language Association of America, 1991, pp. 45-50.

This brief analysis was written primarily to help instructors
make the poem...