Joe,
I remember Roger well from the earlier Expo's, he always talked about his original family I-H Mogul 10-20 which was still on their farm from new.
Another one to mention is the late Dick Carroll from Alta Vista, Kansas. Dick inspired my early years of Wallis collecting after visiting him in 1994 with my travelling partner of that time, the late Derek Hackett of Ross-on Wye, England, both seen here talking Wallis in the second photo.
I