Book 4 of 4. Smith devised the concept of "pureland", where the model should make use of valley and mountain folds only. No sinks, reverses etc were permitted. This suposed "limitation" encouraged the creator to find new and ingenious solutions to create new designs that were especially suitable for children.
Mushroom / Butterfly / Angel Fish / Wave / Duration Flier / Boat with Rudder / Stunt Plane / Dutch Cap / Spinner / Alsomitra / Flapping Bird / Swan / Bearded Man / Girl With Wimple / Giraffe / Yacht / Bird / Calf / Bison / Swan 5 / Lamb / Greek Warrior / Pirate / Janus One / Baby Elephant / Janus Two
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