Chris Fitter (1997). “The Poetic Nocturne: From Ancient Motif to Renaissance Genre“, Early Modern Literary Studies 3.2 (September, 1997). Available in full, for free. An interesting scholarly academic survey of the history of night walk in literature, from classical times to the early modern period (1600s). Possibly relevant to understanding Lovecraft’s attraction to, and his understand of, the night walk as a literary practice. It may also be of interest to historical/horror novelists researching the practice.