Grimes Flying Lab Museum is a nonprofit aviation-heritage museum at historic Grimes Field in Urbana, Ohio, preserving Warren G. Grimes’s work that helped make night flight safer. Its central artifact is the Beech aircraft that served as Grimes’s Flying Lab, a former U.S. Air Force C-45H used to test exterior aircraft lighting in flight; displays also interpret Grimes Manufacturing’s lights and equipment and the local aerospace legacy that continues through today’s aviation-lighting industry. The foundation offers limited public access through current notices, special events and appointments, plus school, scouting and group programmes; the aircraft may fly at special events. Confirm the current operator notice, appointment arrangements and aircraft availability before travel. Visitor address: 1636 N Main Street, Urbana, Ohio 43078, United States.