Olmsted 's influence extended well into the 20th century .
Andrew Jackson Downing and Frederick Law Olmsted adapted European forms for North America , especially influencing the design of public parks , campuses and suburban landscapes .
Frederick Law Olmsted 's influence extended well into the 20th century .
Andrew Jackson Downing and Frederick Law Olmsted adapted European forms for North America , especially influencing the design of public parks , campuses and suburban landscapes .