Dated April 1819 by Hessey, but this may be the date of composition and not necessarily the date Hessey copied the poem. Stillinger (1978, p. 635) gives the date of composition as on or before 16 April 1819, when Keats copied the poem in a letter to his brother and sister-in-law.
With a penciled note "to follow the 'Lawyer,'" a poem that also appeared in the London Magazine, Nov. 1821. This note suggests that the manuscript served as a printer's copy.--Cf. Stillinger (1985), p. 322 and Stillinger (1978), p. 635-636.
Part of a large collection, assembled by Richard Woodhouse, of letters and manuscripts relating to the English poet John Keats. Items in the collection have been described in individual catalog records; see collection-level record for MA 215 for more information.
A fair copy of the poem in the autograph of J. A. Hessey, here titled "Sonnet after reading Dante."