"The Portland chapter of Rotary International dedicated this large bronze cog, the symbol of the organization, at Wahkeena Falls in 1916. It was the centerpiece of a large fountain. In 1985, the artwork was installed at Horsetail Falls, without its fountain base. The legend on one side of the cog reads 'Portland Rotary Club 1916'. On the reverse, the legend read the organization's motto, 'He Profits Most Who Serves Best'."