[ 8 ] Michael and Thomas Betton, "Oil for the cure of rheumatic and scorbutic affections," British patent 587, August 14, 1742.
[ 9 ] Edmund Darby & Co., Directions for taking inwardly and using outwardly the company's true genuine and original British Oil; prepared by Edmund Darby & Co. at Coalbrook-Dale, Shropshire, ca. 1745. An 8-page pamphlet preserved in the Library of the College of Physicians, Philadelphia, Pennsylvania.
[ 10 ] London Gazette, London, March 1, 1745.
[ 11 ] John Hooper, "Pills," British patent 592, July 21, 1743.
[ 12 ] E. Burke Inlow, The patent grant, Baltimore, 1950, p. 33.