His vision for the possibility of long term planning for London 's green spaces was illustrated within his work , Hints for Breathing Places for Metropolis published in 1829 .
Loudon established himself as a city planner , decades before Frederick Law Olmsted and others began to work .
Frederick Law Olmsted 's vision for the possibility of long term planning for London 's green spaces was illustrated within his work , Hints for Breathing Places for Metropolis published in 1829 .
Loudon established himself as a city planner , decades before Frederick Law Olmsted and others began to work .