There are 3 titles associated with this person.

Zimmermann , J.G. (1798). Solitude, written originally by j.g. zimmerman. to which are added, the life of the author; notes historical and explanatory; a copious index; and seven beautiful engravings by ridley. London: Ann Vernor and Thomas Hood [Poultry] John Cuthell [4 Middle Row] John Walker II [44 Paternoster Row, 1784-1814, 1818-1825] Lackington, Allen and Co. James Nunn. David Ogilvy and Son. William Darton and Joseph Harvey [Gracechurch] William Otridge and Son. Richard Lea [Greek Street, Soho]
Zimmermann , J.G. (1799). Solitude, written originally by j. g. zimmerman. to which are added, the life of the author; notes historical and explanatory; a copious index; and seven beautiful engravings by ridley. London: Ann Vernor and Thomas Hood [Poultry] John Cuthell [4 Middle Row] John Walker II [44 Paternoster Row, 1784-1814, 1818-1825] Lackington, Allen and Co. James Nunn. David Ogilvy and Son. William Darton and Joseph Harvey [Gracechurch] William Otridge and Son. Richard Lea [Greek Street, Soho]