New sign honors Trooper Butterfield. #MasonCountyNews #TrooperButterfield By Rob Alway, Editor-in-Chief. FREE SOIL TOWNSHIP — Earlier this summer, a new sign was installed at the roadside memorial to Michigan State Police Trooper Paul Butterfield on Custer Road. Butterfield was killed by gunshot on that site, located between Townline and Gajeski roads, on Sept. 9, 2013, while on duty. Since that…