Conversation so far:
What did Frederick Law Olmsted help conserve?
Frederick Law Olmsted was an early and important activist in the conservation movement, including work at Niagara Falls.
What is another region Frederick Law Olmsted helped conserve, besides Niagara Falls?
Frederick Law Olmsted was an early and important activist in the conservation movement, including work at the Adirondack region of upstate New York.
Did Frederick Law Olmsted join any association for conservation?
Frederick Law Olmsted was one of the founders of the American Society of Landscape Architects in 1898.
Is there any thing other than Olmsted's involvement in the state reserve that's interesting in the Frederick Law Olmsted article?
In 1891, Olmsted refused to develop a plan for Presque Isle Park in Marquette, Michigan.

Question: Why did he refuse to do it?
Self-contained rewrite: Why did Frederick Law Olmsted refuse to develop a plan for Presque Isle Park?