↑ “Alive from the Dead, Almost”. North Star. Danville, Vermont. ngày 6 tháng 11 năm 1848. p. 1, col. 2. Transcribed in Macmillan (2000), pp. 39 – 40.
↑ Campbell, H. F. (1851). “Injuries of the Cranium—Trepanning”. Ohio Medical & Surgical Journal. 4 (1): 20–24. (crediting the Southern Medical & Surgical Journal, unknown date).
