Landscape architects Olmsted and Vaux completed their design of Riverside in the 1860s. The village celebrated its official incorporation in 1975, but by the year 1921, villagers were growing aware that the winding streets, perfect for horse-drawn carriages, needed updating (the “horseless carriages” were taking over), and the trees and plantings that had been so delightful a half-century ago were becoming overgrown and shabby. Organized and ongoing care and control was needed.