There are 5 titles associated with this firm.

Riccoboni, M.J. (1765). The history of the marquis de cressy. translated from the french. London: John Balfour. Thomas Becket and P. A. De Hondt.
Keir, E. (1785). Interesting memoirs. by a lady. in two volumes. ... London: Thomas Cadell [London] Andrew Strahan [1788-1806, 1817-1831] William Creech. John Balfour.
Keir, E. (1785). Interesting memoirs. by a lady. in two volumes. the second edition. London: Thomas Cadell [London] Andrew Strahan [1788-1806, 1817-1831] William Creech. John Balfour.
Keir, E. (1786). Interesting memoirs. by a lady. in two volumes. ... London: Thomas Cadell [London] Andrew Strahan [1788-1806, 1817-1831] William Creech. John Balfour.
Kelly, I. (1794). A collection of poems and fables, by mrs. isabella kelly. London: John Debrett [179 Piccadilly] John Balfour. William Richardson.