From 1979 to 1985 Esley Hamilton helped the Hannibal Arts Council conduct an inventory of the city’s historic buildings. This led to two historic districts and several individual properties being listed in the National Register of Historic Places and an exhibition, “Hannibal as History.” He recently retired as preservation historian for the St. Louis County Department of Parks and Recreation. Among his honors are Missouri Preservation’s Rozier Award and the honorary degree of doctor of arts and letters, awarded by the University of Missouri St. Louis in 2009. He is also an honorary member of the American Institute of Architects. His book, St. Louis Parks, co-authored with NiNi Harris, appeared in 2012.