In Elkhart, Turnock found the success that had eluded him in Chicago. His civic and commercial work there included the Elkhart City Hall, Elkhart General Hospital,
Elkhart High School, Elkhart Masonic Temple, Elkhart Public Library, the Water Company building, the YWCA building, the Christian Science Church, a Presbyterian Church, and the Rice Cemetery office. He also designed a number of residences during this period, the most notable being the home of A.R. Beardsley, known as
Ruthmere. Turnock also designed the Beardsley Mausoleum in Grace Lawn Cemetery. An list of structures attributed to Turnock in and around Elkhart can found at the Robert B. Beardsley Arts Reference Library at the Ruthmere Museum in Elkhart. Turnock became a member of the
American Institute of Architects in 1914 and was elected president of the Indiana Society of Architects in 1919. Following his retirement and shortly before his death in 1926, he was elected to AIA fellowship. He was a member of several clubs and societies, including the Tyrian and Royal Lodge of
Masons, Christiana Country Club, Atherton Club, and the old Century Club. Turnock suffered from kidney disease, for which spent approximately seven months in treatment at the Mayo Hospital in
Rochester, Minnesota. He died from Kidney failure on July 8, 1926, soon after returning home. ==Work==