Articles
The Philatelic Creations of Rev. Nathaniel Cole. (March/April 2021) The Canadian Philatelist. Vol. 72, No. 2, p.74 is a slightly more extensive article showing some additional covers related to Rev. Cole.
Rev. Nathaniel Cole. (Spring/Summer 2021). The Chestico News. p. 10 is a more general biographical sketch of the Rev. Cole and his family.