- “You're twice as large now we've joined up as a team.”
Double Up! is a short rhyming magazine story.
Duncan is grumbling about being so small, but Duke reminds him of the advantages of being small as they puff up a hill into the mountains. Suddenly, Duncan starts to lose steam and Duke has to push him from behind. Duke tells Duncan that now that they have joined up as a team, they are twice as large.
- The illustration is reused from Too Much Rock.