1. Halley, E. (1693). An Estimate of the Degrees of the Mortality of Mankind; Drawn from Curious Tables of the Births and Funerals at the City of Breslaw; with an Attempt to Ascertain the Price of Annuities upon Lives. Philosophical Transactions of the Royal Society of London, 17(196), 596–610.
2. Price, R. (1771). Observations on Reversionary Payments; On Schemes for Providing Annuities for Widows, and for Persons in Old Age; On the Method of Calculating the Values of Assurances on Lives; and on the National Debt. To Which Are Added, Four Essays on Different Subjects in the Doctrine of Life-annuities and Political Arithmetic (2nd ed.). Printed for T. Cadell, in the Strand. Eighteenth Century Collections Online. http://link.gale.com/apps/doc/CW0105622537/ECCO?u=ed_itw&sid=bookmark-ECCO&xid=2190f221&pg=1. Accessed 12 July 2022.
3. National Records of Scotland (NRS) Church of Scotland (CH) Records.
4. CH9/1: Church of Scotland Trustee Minutes; NRS Catalogue—Catalogue Record. nrscotland.gov.uk
5. CH9/16: Printed Reports; NRS Catalogue—Search Results Overview. nrscotland.gov.uk