I recently posted about Walt Wallet's cameo (from Gasoline Alley) in Dick Tracy (The Alley Comes to Tracy). I thought it was just a single sequence, but I was wrong. Mike Curtis and Joe Staton spun out the crossover for a full week. And how enjoyable it was for us comics fans.
Here's the entire sequence, which mainly serves as a break in the action between one story arc and another. A few things of interest. Baby Judy was abandoned in Walt's car in 1935, and was adopted by the Wallets. In the flashback sequence both Dick Tracy and Walt Wallet appear as they were drawn in 1935 by their respective creators Chester Gould and Frank King. What fun! (click on images to enlarge)