Mayor James P. Baxter requested this map of the Western Promenade in Portland. It was made by the landscape architecture firm Olmsted Brothers in 1905.

It was among the maps of Portland's planned park system that were included in Baxter's book, The Park System of Portland.

Frederick Law Olmsted (1822-1903) was one of America's foremost landscape architects, and his firm, the Olmsted Brothers, designed Portland's Eastern and Western Promenades, the grounds of the Governor's mansion in Augusta, State House and Capitol Park in Augusta, and the motor roads of Acadia National Park, among their projects.