Actually, Sterling's S-1 Ringmaster didn't appear until 1952. I was there. One week the South Jersey hobby shops were loaded with the kits....by the following Sunday the fields were covered with Ringmasters!
Well Mike, you may be right about the kit coming out in 1952 (I don't know and plead Senior memory) but Kania designed the model in 1950 according to his "Autobiography" http://www.modelaircraft.org/museum/bio/Kania.pdf"Designs by Matt Kania Kitted by Manufacturers
Designs Kitted by Megow Corporation. Philadelphia, Pennsylvania:
1934 - Helped in the Design & Engineering of the Flying Quaker
1938 - Designed Class A & B Gas Model Free Flight, Ranger
1945 - Designed Stardust, National speed record holder while in U.S. Navy
1946 - Designed Flying Circus, Profile U-control Stunt model 1946 Designed Tyro); Built up
U-control Stunt Model
● Designed Super Quaker, Class C-Free Flight
1947 - Designed Perky, Class A Speed Model
● Designed Baby Quaker, Class A Free Flight
Designs Kitted by P.D.Q. Products Co. Philadelphia, Pa.:
1948 - Designed Super Clown, Class B U-Control Stunt Model
Designs Kitted by Sterling Models Philadelphia, Pa.:
1950 - Designed the worlds most populous Profile Control Line Stunt Model (Ringmaster) 1953-58 - Designed F-51 Mustang, semi scale profile
• Yak-9, semi scale profile
• Ringmaster Jr., Class A-Profile
• Super Ringmaster, Built up Fuselage model
• Baby Ringmaster, Profile model
• Space Kaydet, Fuselage Class A"