Had it remained so, Gasoline Alley probably would have been cancelled sometime in the late 1920's. Instead, on Valentine's Day, Skeezix was placed on Walt Wallet's doorstep, and the strip started chronicling the adventures of this thrown-together family. As it continues to do so today.
Recently, Rufus (a mainstay supporting character) had to find good homes for some kittens. He left one at Walt Wallet's, which lead to a classic flashback. (click on images to enlarge)
A fine reference by current writer/artist Jim Scancarelli. And -- for this comics fan -- an appreciated one.