In searching EAA events with that A/C came across an article on Cubs…BINGO! Mr Richard Brown of Excelsior MN. Unfortunately there are two Richard Browns in that city, so I will keep chasing, try to figure out which one before cold calling (I hate to do that!) but I’m getting closer. I am also trying to trace the author of a couple of the articles on the cub in action so I can try to get the specific A/C ID.