Calling All Kids #10

This anthology issue includes two stories: In "Marco Polar Bear," Bobby finds a kite and attempts to fly it with friends, leading to an adventure where he and the kite are carried to China, where he encounters Marco and learns about Chinese farming customs and market practices. The second story features a boy who discovers a delivery wagon that belonged to a roller coaster and, after an encounter with a ghost-like figure, learns the wagon's history involves delivering milk with a magical speed demon, ultimately resolving that Rolly the Speed Demon stayed to help Roger deliver milk throughout the valley. Additionally, the issue contains a story about a boy at a fair who initially rides a mule but is encouraged by his father and others to walk instead, teaching him a lesson about responsibility and effort.