William Wordsworth, Dorothy Wordsworth, Ernest De Selincourt, Alan G. Hill, Chester Linn Shaver (1967). “The Letters of William and Dorothy Wordsworth: Volume VIII. A Supplement of New Letters”, p.51, Oxford University Press on Demand
"My Heart Leaps Up When I Behold" l. 1 (1807). Wordsworth also used the last three lines as the epigraph for his poem "Ode: Intimations of Immortality from Recollections of Early Childhood" (1807). See Milton 43
Samuel Taylor Coleridge, William Wordsworth (2015). “Lyrical Ballads and other Poems by Samuel Taylor Coleridge and William Wordsworth (Including Their Thoughts On Poetry Principles and Secrets): Collections of Poetry which marked the beginning of the English Romantic movement in literature, including poems The Rime of the Ancient Mariner, The Dungeon, The Nightingale, Dejection: An Ode”, p.568, e-artnow