2023 IRONSTONE CONCOURS program 8.5″×11″ Ironstone Concours Speaker Forum Ragtime Racers Panel page 14
2023 IRONSTONE CONCOURS program 8.5″×11″ RAGTIME RACERS By Harold Osmer page 12
2023 IRONSTONE CONCOURS program 8.5″×11″ RAGTIME RACERS By Harold Osmer page 13