WawnA.Quoted in the foreword to The Pirate by Sir Walter Scott. Lerwick: Shetland Times Ltd, 1996: x–xi
2.
SmithB.Camphor, cabbage leaves, and vaccination: the career of Johnnie “Notions” Williamson, of Hamnavoe, Eshaness, Shetland. Proc R Coll Physicians Edinburgh1998; 28: 395–406
3.
“Runic stone triggers anger”. Shetland Times, 19 September 1997
4.
LeFanuWR. A Bio-bibliography of Edward Jenner (1749–1823). London: Harvey & Blythe Ltd, 1951
5.
ParishHJ. In: Victory with Vaccines. Edinburgh: E&S Livingstone Ltd, 1968
6.
BaileyI.Edward Jenner (1749–1823): naturalist, scientist, country doctor, benefactor to mankind. J Med Biog1996; 4: 63–70
7.
KeenWW. In: Addresses and Other Papers. Philadelphia: WB Saunders & Co., 1905: 276 (facsimile edition: Classics of Medicine Library)
8.
SandisonR. In: Christopher Sandison of Eshaness (1781–1870). Diaries in an Age of Social Change. Lerwick: Shetland Times Ltd, 1997: 269–71
9.
EastwoodJEastwoodM. In: E. B. Jamieson: Anatomist and Shetlander. Lerwick: Shetland Times Ltd, 1999
10.
ConacherDG. Smallpox in Tanganyika 1918–1954. East African Med J1957; 34: 157–81
11.
SwainRHA. The pox viruses. In: CruikshankR, Ed. Medical Microbiology. Edinburgh: E&S Livingstone Ltd, 1968: 368–82
12.
PorterR. In: The Greatest Benefit to Mankind. New York: WW Norton & Co., 1997: 276