John Milton (1873). “The Poetical Works of John Milton: With a Life of the Author, Preliminary Dissertations on Each Poem, Notes Critical and Explanatory, an Index to the Subjects of Paradise Lost, and a Verbal Index to All the Poems”, p.380
John Muir (1997). “Nature Writings: The Story of My Boyhood and Youth, My First Summer in the Sierra, the Mountains of California, Stickeen, Selected Essays”, p.351, Library of America