1. Albers FH (1832–1862) Atlas der pathologischen Anatomie für praktische Aerzte. Bonn 1832–1862
2. Anonymus (1907) Churchman, John, scientist. Natl Cyclopedia Am Biogr 9:287. New York
3. Banks J (2007) The Scientific Correspondence of Sir Joseph Banks, 1765-1820. Ed. by Neil Chambers, vols 1–6. London
4. Barlow P (1833) On the present situation of the magnetic lines of equal variation, and their changes on the terrestrial surface. Philos Trans R Soc Lond Teil 2:667–673. London
5. Bedini S (2000) John Churchman and his magnetic Atlas, Part I and II. In: History corner, professional surveyor magazine, vol 20. Issue November and December 2000. Online-Ressource, Part 1:
http://www.profsurv.com/magazine/article.aspx?i=669
; Part 2:
http://www.profsurv.com/magazine/article.aspx?i=681