(Grand Lake Regional Cancer Center, 55', OH-54-01) in Celina, Mercer County, OH. OH197 (Wayne St.) E. (curves NE) 1.0 miles from jct with US127, SE (curves E.) on Havemann Rd. 0.1 miles to the bldg on the S. side of the road at 900. (N40 33.359 W84 33.173) Photos by Jack & June Schmidt 6-10-15.