- Select Miscellaneous Productions, of Mrs. Day, and Thomas Day, Esq., in Verse and Prose; Also, Some Detached Pieces of Poetry
- The speech of Thomas Day, Esq. on the necessity of a reform in Parliament, delivered at Cambridge, March 25, 1780; ...
- Two speeches of Thomas Day, Esq. at the general meetings of the counties of Cambridge and Essex, held March 25, and April 25, 1780.
- Sandford et Merton, traduction libre de l'anglois, par M. Berquin. ... Volume 2 of 2
- Fragment of an original letter on the slavery of the negroes; written in the year 1776, by Thomas Day, Esq.