As downtown Chicago began to develop over the upcoming decades, the easement was held legally binding by the Illinois Supreme Court in 1925. When the 22-story office tower known as 100 West Monroe was built on this land site in 1927, the building had to be built around and over the path. A plaque was placed on the building which reads as follows: “Historic Cow Path: This areaway 10 x 177 x 18 feet is reserved forever as a cow path by the terms of the deed of Willard Jones in 1844 when he sold portions of the surrounding property. Erected by Chicago’s Charter Jubilee and Authenticated by the Chicago Historical Society, 1937.” This unique bit of Chicago history still exists today. They proudly pay tribute to Willard Jones with the formation of Willard Jones Real Estate to help bring recognition to his role as one of the pioneers and founding fathers of downtown Chicago commercial real estate.