The Moffats by Eleanor Estes, Louis Slobodkin

Meet the Moffats. There is Sylvie, the oldest, the cleverest, and-most days at least-the responsible one; Joey, who though only twelve is the man of the house...sometimes; Janey, who has a terrific upside-down way of looking at the world; and Rufus, who may be the littlest but always gets in the biggest trouble.
Even the most ordinary Moffat day is packed with extraordinary fun. Only a Moffat could get locked in a bread box all afternoon, or dance with a dog in front of the whole town, or hitch a ride on a boxcar during kindergarten recess. And only a Moffat could turn mistakes and mischief into hilarious one-of-a-kind adventure.