There were several predecessors and many variations of the AMA Cub that have been published over the years.
The Academy of Model Aeronautics has published a series of History Moments, including this one for Week 3 in October, 2011, on the AMA Cub and its cousins:
This is a list of references to published articles of models based on the Dart/Cub design.
Dave Linstrum, “The Canardart”, Model Builder, January 1978, pages 64-65,90-91. This tells how to convert a 16 1/2″ AMA Racer into a pusher canard configuration. The article neglects to mention that something must be done to stop the prop shaft from turning in the freewheeler when the motor is wound backwards.
Dave Linstrum, “Ultra Dart”, Model Builder, July 1975, pages 51-53, 62, 66. This is a Thermal Dart enlarged to a 37″ wingspan.
Hobie Steele, “Dart-Too”, Model Aviation, July 1975, pages 43-46.
Bill Hannan, “Hannan’s Hangar”, Model Builder, April 1974, pages 34 and 65. This is a 39″ span version of the Delta Dart from Russia.
Fred Reese, “Baby Dart”, Model Builder, August 1973, pages 39-40. This is a 9″ span Dart.
Henry G. Frautschy, “Sorta P-38”, Flying Models, August 2012, page 32-35. Construction article and plan for a twin boom AMA Cub made from two kits.
If you are a member of the Academy of Model Aeronautics you can access the digital archive of Model Aviation online. You can get plans of the Delta Dart and Dart-Too from the AMA Plans Service here:
You can get copies of plans, most with articles, published in Model Builder from the publisher, Bill Northrup’s Plan Service, 2019 Doral Court, Henderson, NV 89074, phone (702) 986-2162, 10-4 PT, Mon.-Fri.
You can get all 295 issues of Model Builder magazine on DVD from Roland Friestad, 1640A N. Kellogg St., Galesburg, IL 61401, cardinal.eng (at) grics.net.
You can get Flying Models from the publisher here: