JS, Journal, 6 Apr. 1843; Clayton, Journal, 2 Apr. 1843.
Clayton, William. Journals, 1842–1845. CHL.
Beneath his account of JS’s discourse, Burgess calculated the year in which JS would turn eighty-five: “Joseph Smith was born in the year | 1805 | [+] 85 | [=] 1890.” (Burgess, Journal and Notebook, [24].)
Burgess, James. Journal and Notebook, Oct. 1841–Dec. 1848. James Burgess, Journals, 1841–1848. CHL.