Charles Crawford, who compiled concordances to Thomas Kyd and to Christopher Marlowe, set out in an article to show John Webster's borrowings from Florio's Montaigne, from John Marston and from Donne ('Montaigne, Webster and Marston: Dr Donne and Webster', 10:6 (1906), 122-4 and 242-4; reprinted in Crawford's Collectanea, 2nd series, 1907, pp. 38, 49 and 54-63).
[Crawford gives parallel passages from Donne's Anniversaries and from two works by Webster, which show how liberally Webster helped himself to Donne's conceits, images and diction. One of the works Crawford exhibits, Webster's elegy for Prince Henry called A Monumental Column, must have been written late in 1612 shortly after the publication of Donne's Second Anniversary. Crawford argues that the other work which draws freely on Donne, The Duchess of Malfi, is likely to have been written not long after that time.]
W.F. Melton (1867-1944), best known as a poet, submitted to the Johns Hopkins University, Baltimore, a doctoral dissertation on Donne's verse which was afterwards published. He went on to write a biographical sketch of Donne, and a book on Sidney Lanier, and prepared an edition of John Ruskin's Crown of Wild Olive and The Queen of the Air (The Rhetoric of John Donne's Verse, 1906, pp. 2, 8, 107-9, 148, 167-8, 193 and 206).