I believe you! My dad was Edmund C Liebert, the pilot of the plane your grandpa was on in WWII. He ALWAYS talked about Clayton Hopfensperger who wrote "The Red Raven" polka!!! I think that is so darn cool!
@CatAvionics Thanks This was recorded from Big Joe's Polka show as you probably know from about 5-6 years ago if not longer and I was there in Industry I know some of the guys in the Red Ravens Lawrence Svetlik from El Campo and Kenneth Krystnik from Moulton-Heard them earlier in the year in Sealy at a festival Mike from Hungefored Texas