Johnny's summer morning walks, taken initially from boredom, become quite adventurous.

Eleven-year-old Janie advertises to do odd jobs in her neighborhood and receives so much business, she hires her friends and becomes manager of the Kid Power Agency.

For Henry and his big dog Mudge, summer means going on a picnic in the park, taking a bath under the garden hose, and going to the top of the big green hill.

For Lucy Wells, who lives on a farm in New Hampshire, the summer of 1910 is filled with helping her mother can fruits and vegetables, enjoying the Fourth of July celebration, and other activities.